Vulnerability-Lookup

RHSA-2025:15471

Vulnerability from csaf_opensuse - Published: 2025-09-08 00:00 - Updated: 2026-09-20 11:48

Summary

security update for kernel

Severity

Important

Notes

Title of the patch: security update for kernel

Description of the patch: This security update provides a functional equivalent of RHSA-2025:15471. The original Red Hat(R) advisory is available from the Red Hat web site at https://access.redhat.com/errata/RHSA-2025:15471.

Patchnames: RHSA-2025:15471

CVE-2022-49985

5.5 (Medium)


                
                  CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected products

Recommended 20 products

Product	Version	Remediation
Unresolved product id: SUSE Liberty Linux 8:bpftool-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-abi-stablelists-0:4.18.0-553.74.1.el8_10.noarch	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-core-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-cross-headers-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-debug-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-debug-core-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-debug-devel-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-debug-modules-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-debug-modules-extra-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-devel-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-doc-0:4.18.0-553.74.1.el8_10.noarch	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-headers-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-modules-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-modules-extra-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-tools-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-tools-libs-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:kernel-tools-libs-devel-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:perf-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix
Unresolved product id: SUSE Liberty Linux 8:python3-perf-0:4.18.0-553.74.1.el8_10.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2025-38352

7 (High)


                
                  CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Recommended 20 products, the same list as for CVE-2022-49985

Threats

Impact important

References

13 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/r…	self
https://lists.suse.com/pipermail/suse-liberty-lin…	self
https://lists.suse.com/pipermail/suse-liberty-lin…	self
https://www.suse.com/security/cve/CVE-2022-49985/	self
https://www.suse.com/security/cve/CVE-2025-38352/	self
https://www.suse.com/security/cve/CVE-2022-49985	external
https://bugzilla.suse.com/1244956	external
https://www.suse.com/security/cve/CVE-2025-38352	external
https://bugzilla.suse.com/1246911	external
https://bugzilla.suse.com/1249205	external
https://bugzilla.suse.com/1253291	external
https://bugzilla.suse.com/1253292	external

JSON

To clipboard

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          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Don\u0027t use tnum_range on array range checking for poke descriptors\n\nHsin-Wei reported a KASAN splat triggered by their BPF runtime fuzzer which\nis based on a customized syzkaller:\n\n  BUG: KASAN: slab-out-of-bounds in bpf_int_jit_compile+0x1257/0x13f0\n  Read of size 8 at addr ffff888004e90b58 by task syz-executor.0/1489\n  CPU: 1 PID: 1489 Comm: syz-executor.0 Not tainted 5.19.0 #1\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\n  1.13.0-1ubuntu1.1 04/01/2014\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x9c/0xc9\n   print_address_description.constprop.0+0x1f/0x1f0\n   ? bpf_int_jit_compile+0x1257/0x13f0\n   kasan_report.cold+0xeb/0x197\n   ? kvmalloc_node+0x170/0x200\n   ? bpf_int_jit_compile+0x1257/0x13f0\n   bpf_int_jit_compile+0x1257/0x13f0\n   ? arch_prepare_bpf_dispatcher+0xd0/0xd0\n   ? rcu_read_lock_sched_held+0x43/0x70\n   bpf_prog_select_runtime+0x3e8/0x640\n   ? bpf_obj_name_cpy+0x149/0x1b0\n   bpf_prog_load+0x102f/0x2220\n   ? __bpf_prog_put.constprop.0+0x220/0x220\n   ? find_held_lock+0x2c/0x110\n   ? __might_fault+0xd6/0x180\n   ? lock_downgrade+0x6e0/0x6e0\n   ? lock_is_held_type+0xa6/0x120\n   ? __might_fault+0x147/0x180\n   __sys_bpf+0x137b/0x6070\n   ? bpf_perf_link_attach+0x530/0x530\n   ? new_sync_read+0x600/0x600\n   ? __fget_files+0x255/0x450\n   ? lock_downgrade+0x6e0/0x6e0\n   ? fput+0x30/0x1a0\n   ? ksys_write+0x1a8/0x260\n   __x64_sys_bpf+0x7a/0xc0\n   ? syscall_enter_from_user_mode+0x21/0x70\n   do_syscall_64+0x3b/0x90\n   entry_SYSCALL_64_after_hwframe+0x63/0xcd\n  RIP: 0033:0x7f917c4e2c2d\n\nThe problem here is that a range of tnum_range(0, map-\u003emax_entries - 1) has\nlimited ability to represent the concrete tight range with the tnum as the\nset of resulting states from value + mask can result in a superset of the\nactual intended range, and as such a tnum_in(range, reg-\u003evar_off) check may\nyield true when it shouldn\u0027t, for example tnum_range(0, 2) would result in\n00XX -\u003e v = 0000, m = 0011 such that the intended set of {0, 1, 2} is here\nrepresented by a less precise superset of {0, 1, 2, 3}. As the register is\nknown const scalar, really just use the concrete reg-\u003evar_off.value for the\nupper index check.",
          "title": "CVE description"
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          "title": "CVE description"
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          "summary": "SUSE Bug 1246911 for CVE-2025-38352",
          "url": "https://bugzilla.suse.com/1246911"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1249205 for CVE-2025-38352",
          "url": "https://bugzilla.suse.com/1249205"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1253291 for CVE-2025-38352",
          "url": "https://bugzilla.suse.com/1253291"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1253292 for CVE-2025-38352",
          "url": "https://bugzilla.suse.com/1253292"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "details": "To install this SUSE Security Update use the SUSE recommended installation methods like YaST online_update or \"zypper patch\".\n",
          "product_ids": [
            "SUSE Liberty Linux 8:bpftool-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-abi-stablelists-0:4.18.0-553.74.1.el8_10.noarch",
            "SUSE Liberty Linux 8:kernel-core-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-cross-headers-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-core-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-devel-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-modules-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-modules-extra-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-devel-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-doc-0:4.18.0-553.74.1.el8_10.noarch",
            "SUSE Liberty Linux 8:kernel-headers-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-modules-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-modules-extra-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-tools-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-tools-libs-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-tools-libs-devel-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:perf-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:python3-perf-0:4.18.0-553.74.1.el8_10.x86_64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 7,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "products": [
            "SUSE Liberty Linux 8:bpftool-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-abi-stablelists-0:4.18.0-553.74.1.el8_10.noarch",
            "SUSE Liberty Linux 8:kernel-core-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-cross-headers-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-core-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-devel-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-modules-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-debug-modules-extra-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-devel-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-doc-0:4.18.0-553.74.1.el8_10.noarch",
            "SUSE Liberty Linux 8:kernel-headers-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-modules-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-modules-extra-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-tools-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-tools-libs-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:kernel-tools-libs-devel-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:perf-0:4.18.0-553.74.1.el8_10.x86_64",
            "SUSE Liberty Linux 8:python3-perf-0:4.18.0-553.74.1.el8_10.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2025-09-08T00:00:00Z",
          "details": "important"
        }
      ],
      "title": "CVE-2025-38352"
    }
  ]
}

CVE-2022-49985 (GCVE-0-2022-49985)

Vulnerability from cvelistv5 – Published: 2025-06-18 11:00 – Updated: 2026-08-05 08:57

Title

bpf: Don't use tnum_range on array range checking for poke descriptors

Summary

In the Linux kernel, the following vulnerability has been resolved: bpf: Don't use tnum_range on array range checking for poke descriptors Hsin-Wei reported a KASAN splat triggered by their BPF runtime fuzzer which is based on a customized syzkaller: BUG: KASAN: slab-out-of-bounds in bpf_int_jit_compile+0x1257/0x13f0 Read of size 8 at addr ffff888004e90b58 by task syz-executor.0/1489 CPU: 1 PID: 1489 Comm: syz-executor.0 Not tainted 5.19.0 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014 Call Trace: <TASK> dump_stack_lvl+0x9c/0xc9 print_address_description.constprop.0+0x1f/0x1f0 ? bpf_int_jit_compile+0x1257/0x13f0 kasan_report.cold+0xeb/0x197 ? kvmalloc_node+0x170/0x200 ? bpf_int_jit_compile+0x1257/0x13f0 bpf_int_jit_compile+0x1257/0x13f0 ? arch_prepare_bpf_dispatcher+0xd0/0xd0 ? rcu_read_lock_sched_held+0x43/0x70 bpf_prog_select_runtime+0x3e8/0x640 ? bpf_obj_name_cpy+0x149/0x1b0 bpf_prog_load+0x102f/0x2220 ? __bpf_prog_put.constprop.0+0x220/0x220 ? find_held_lock+0x2c/0x110 ? __might_fault+0xd6/0x180 ? lock_downgrade+0x6e0/0x6e0 ? lock_is_held_type+0xa6/0x120 ? __might_fault+0x147/0x180 __sys_bpf+0x137b/0x6070 ? bpf_perf_link_attach+0x530/0x530 ? new_sync_read+0x600/0x600 ? __fget_files+0x255/0x450 ? lock_downgrade+0x6e0/0x6e0 ? fput+0x30/0x1a0 ? ksys_write+0x1a8/0x260 __x64_sys_bpf+0x7a/0xc0 ? syscall_enter_from_user_mode+0x21/0x70 do_syscall_64+0x3b/0x90 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f917c4e2c2d The problem here is that a range of tnum_range(0, map->max_entries - 1) has limited ability to represent the concrete tight range with the tnum as the set of resulting states from value + mask can result in a superset of the actual intended range, and as such a tnum_in(range, reg->var_off) check may yield true when it shouldn't, for example tnum_range(0, 2) would result in 00XX -> v = 0000, m = 0011 such that the intended set of {0, 1, 2} is here represented by a less precise superset of {0, 1, 2, 3}. As the register is known const scalar, really just use the concrete reg->var_off.value for the upper index check.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Assigner

Linux mitre root

References

4 references

URL	Tags
https://git.kernel.org/stable/c/e8979807178434db8…
https://git.kernel.org/stable/c/4f672112f8665102a…
https://git.kernel.org/stable/c/a36df92c7ff7ecde2…
https://git.kernel.org/stable/c/a657182a5c5150cdf…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: d2e4c1e6c2947269346054ac8937ccfe9e0bcc6b , < e8979807178434db8ceaa84dfcd44363e71e50bb (git) Affected: d2e4c1e6c2947269346054ac8937ccfe9e0bcc6b , < 4f672112f8665102a5842c170be1713f8ff95919 (git) Affected: d2e4c1e6c2947269346054ac8937ccfe9e0bcc6b , < a36df92c7ff7ecde2fb362241d0ab024dddd0597 (git) Affected: d2e4c1e6c2947269346054ac8937ccfe9e0bcc6b , < a657182a5c5150cdfacb6640aad1d2712571a409 (git)
Linux	Linux	Affected: 5.5 Unaffected: 0 , < 5.5 (semver) Unaffected: 5.10.140 , ≤ 5.10.* (semver) Unaffected: 5.15.64 , ≤ 5.15.* (semver) Unaffected: 5.19.6 , ≤ 5.19.* (semver) Unaffected: 6.0 , ≤ * (original_commit_for_fix)

Show details on NVD website

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{
  "containers": {
    "cna": {
      "affected": [
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          "programFiles": [
            "kernel/bpf/verifier.c"
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          "versions": [
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              "lessThan": "e8979807178434db8ceaa84dfcd44363e71e50bb",
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              "versionType": "git"
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              "versionType": "git"
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              "version": "d2e4c1e6c2947269346054ac8937ccfe9e0bcc6b",
              "versionType": "git"
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          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "kernel/bpf/verifier.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.5"
            },
            {
              "lessThan": "5.5",
              "status": "unaffected",
              "version": "0",
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              "status": "unaffected",
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              "versionType": "semver"
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              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.64",
              "versionType": "semver"
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              "status": "unaffected",
              "version": "5.19.6",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.0",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.10.140",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.64",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.19.6",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.0",
                  "versionStartIncluding": "5.5",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Don\u0027t use tnum_range on array range checking for poke descriptors\n\nHsin-Wei reported a KASAN splat triggered by their BPF runtime fuzzer which\nis based on a customized syzkaller:\n\n  BUG: KASAN: slab-out-of-bounds in bpf_int_jit_compile+0x1257/0x13f0\n  Read of size 8 at addr ffff888004e90b58 by task syz-executor.0/1489\n  CPU: 1 PID: 1489 Comm: syz-executor.0 Not tainted 5.19.0 #1\n  Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS\n  1.13.0-1ubuntu1.1 04/01/2014\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x9c/0xc9\n   print_address_description.constprop.0+0x1f/0x1f0\n   ? bpf_int_jit_compile+0x1257/0x13f0\n   kasan_report.cold+0xeb/0x197\n   ? kvmalloc_node+0x170/0x200\n   ? bpf_int_jit_compile+0x1257/0x13f0\n   bpf_int_jit_compile+0x1257/0x13f0\n   ? arch_prepare_bpf_dispatcher+0xd0/0xd0\n   ? rcu_read_lock_sched_held+0x43/0x70\n   bpf_prog_select_runtime+0x3e8/0x640\n   ? bpf_obj_name_cpy+0x149/0x1b0\n   bpf_prog_load+0x102f/0x2220\n   ? __bpf_prog_put.constprop.0+0x220/0x220\n   ? find_held_lock+0x2c/0x110\n   ? __might_fault+0xd6/0x180\n   ? lock_downgrade+0x6e0/0x6e0\n   ? lock_is_held_type+0xa6/0x120\n   ? __might_fault+0x147/0x180\n   __sys_bpf+0x137b/0x6070\n   ? bpf_perf_link_attach+0x530/0x530\n   ? new_sync_read+0x600/0x600\n   ? __fget_files+0x255/0x450\n   ? lock_downgrade+0x6e0/0x6e0\n   ? fput+0x30/0x1a0\n   ? ksys_write+0x1a8/0x260\n   __x64_sys_bpf+0x7a/0xc0\n   ? syscall_enter_from_user_mode+0x21/0x70\n   do_syscall_64+0x3b/0x90\n   entry_SYSCALL_64_after_hwframe+0x63/0xcd\n  RIP: 0033:0x7f917c4e2c2d\n\nThe problem here is that a range of tnum_range(0, map-\u003emax_entries - 1) has\nlimited ability to represent the concrete tight range with the tnum as the\nset of resulting states from value + mask can result in a superset of the\nactual intended range, and as such a tnum_in(range, reg-\u003evar_off) check may\nyield true when it shouldn\u0027t, for example tnum_range(0, 2) would result in\n00XX -\u003e v = 0000, m = 0011 such that the intended set of {0, 1, 2} is here\nrepresented by a less precise superset of {0, 1, 2, 3}. As the register is\nknown const scalar, really just use the concrete reg-\u003evar_off.value for the\nupper index check."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The vulnerability is triggered by loading a crafted eBPF program via the bpf() syscall (BPF_PROG_LOAD \u2192 verifier \u2192 JIT), which is a local attack vector.\nAC:L - The attacker fully controls PROG_ARRAY max_entries and the constant tail-call index, and a public PoC reliably triggers the slab OOB during JIT with no conditions outside attacker control.\nPR:L - Exploitation requires loading BPF programs and creating a PROG_ARRAY (CAP_BPF, or unprivileged BPF where enabled); this is basic/low privilege relative to full root, consistent with other BPF verifier OOB scorings.\nUI:N - No victim action is required; the attacker triggers the bug solely by loading their own crafted BPF program.\nS:U - Impact stays within the kernel\u0027s authority (local memory corruption / potential privilege escalation); it does not cross a VM, IOMMU, or other security boundary.\nC:H - The bug is a slab out-of-bounds read of pointer-sized values from adjacent memory, and with attacker-chosen map sizes the OOB can span kilobytes, enabling high-impact disclosure primitives.\nI:H - The OOB-read pointer is passed to bpf_tail_call_direct_fixup / __bpf_arch_text_poke, which patches JIT code with a jump derived from that value, yielding a controllable integrity / control-flow corruption primitive.\nA:H - The OOB access was confirmed via KASAN as a slab-out-of-bounds read in bpf_int_jit_compile, and dereferencing a garbage target pointer can cause a kernel oops/panic."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-05T08:57:01.160Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/e8979807178434db8ceaa84dfcd44363e71e50bb"
        },
        {
          "url": "https://git.kernel.org/stable/c/4f672112f8665102a5842c170be1713f8ff95919"
        },
        {
          "url": "https://git.kernel.org/stable/c/a36df92c7ff7ecde2fb362241d0ab024dddd0597"
        },
        {
          "url": "https://git.kernel.org/stable/c/a657182a5c5150cdfacb6640aad1d2712571a409"
        }
      ],
      "title": "bpf: Don\u0027t use tnum_range on array range checking for poke descriptors",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2022-49985",
    "datePublished": "2025-06-18T11:00:47.251Z",
    "dateReserved": "2025-06-18T10:57:27.386Z",
    "dateUpdated": "2026-08-05T08:57:01.160Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2025-38352 (GCVE-0-2025-38352)

Vulnerability from cvelistv5 – Published: 2025-07-22 08:04 – Updated: 2026-09-08 15:32

Title

posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()

Summary

In the Linux kernel, the following vulnerability has been resolved: posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del() If an exiting non-autoreaping task has already passed exit_notify() and calls handle_posix_cpu_timers() from IRQ, it can be reaped by its parent or debugger right after unlock_task_sighand(). If a concurrent posix_cpu_timer_del() runs at that moment, it won't be able to detect timer->it.cpu.firing != 0: cpu_timer_task_rcu() and/or lock_task_sighand() will fail. Add the tsk->exit_state check into run_posix_cpu_timers() to fix this. This fix is not needed if CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y, because exit_task_work() is called before exit_notify(). But the check still makes sense, task_work_add(&tsk->posix_cputimers_work.work) will fail anyway in this case.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-09-05 03:55 UTC

CWE

CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition

Assigner

Linux mitre root

References

12 references

URL	Tags
https://git.kernel.org/stable/c/78a4b8e3795b31dae…
https://git.kernel.org/stable/c/c076635b3a42771ac…
https://git.kernel.org/stable/c/2f3daa04a9328220d…
https://git.kernel.org/stable/c/764a7a5dfda23f699…
https://git.kernel.org/stable/c/2c72fe18cc5f9f175…
https://git.kernel.org/stable/c/c29d5318708e67ac1…
https://git.kernel.org/stable/c/460188bc042a3f40f…
https://git.kernel.org/stable/c/f90fff1e152dedf52…
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource
https://github.com/farazsth98/chronomaly	exploit
https://lists.debian.org/debian-lts-announce/2025…
https://lists.debian.org/debian-lts-announce/2025…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 0bdd2ed4138ec04e09b4f8165981efc99e439f55 , < 78a4b8e3795b31dae58762bc091bb0f4f74a2200 (git) Affected: 0bdd2ed4138ec04e09b4f8165981efc99e439f55 , < c076635b3a42771ace7d276de8dc3bc76ee2ba1b (git) Affected: 0bdd2ed4138ec04e09b4f8165981efc99e439f55 , < 2f3daa04a9328220de46f0d5c919a6c0073a9f0b (git) Affected: 0bdd2ed4138ec04e09b4f8165981efc99e439f55 , < 764a7a5dfda23f69919441f2eac2a83e7db6e5bb (git) Affected: 0bdd2ed4138ec04e09b4f8165981efc99e439f55 , < 2c72fe18cc5f9f1750f5bc148cf1c94c29e106ff (git) Affected: 0bdd2ed4138ec04e09b4f8165981efc99e439f55 , < c29d5318708e67ac13c1b6fc1007d179fb65b4d7 (git) Affected: 0bdd2ed4138ec04e09b4f8165981efc99e439f55 , < 460188bc042a3f40f72d34b9f7fc6ee66b0b757b (git) Affected: 0bdd2ed4138ec04e09b4f8165981efc99e439f55 , < f90fff1e152dedf52b932240ebbd670d83330eca (git)
Linux	Linux	Affected: 2.6.36 Unaffected: 0 , < 2.6.36 (semver) Unaffected: 5.4.295 , ≤ 5.4.* (semver) Unaffected: 5.10.239 , ≤ 5.10.* (semver) Unaffected: 5.15.186 , ≤ 5.15.* (semver) Unaffected: 6.1.142 , ≤ 6.1.* (semver) Unaffected: 6.6.94 , ≤ 6.6.* (semver) Unaffected: 6.12.34 , ≤ 6.12.* (semver) Unaffected: 6.15.3 , ≤ 6.15.* (semver) Unaffected: 6.16 , ≤ * (original_commit_for_fix)

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{
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                "id": "CVE-2025-38352",
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                "timestamp": "2025-09-05T03:55:31.566379Z",
                "version": "2.0.3"
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            "url": "https://github.com/farazsth98/chronomaly"
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nposix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()\n\nIf an exiting non-autoreaping task has already passed exit_notify() and\ncalls handle_posix_cpu_timers() from IRQ, it can be reaped by its parent\nor debugger right after unlock_task_sighand().\n\nIf a concurrent posix_cpu_timer_del() runs at that moment, it won\u0027t be\nable to detect timer-\u003eit.cpu.firing != 0: cpu_timer_task_rcu() and/or\nlock_task_sighand() will fail.\n\nAdd the tsk-\u003eexit_state check into run_posix_cpu_timers() to fix this.\n\nThis fix is not needed if CONFIG_POSIX_CPU_TIMERS_TASK_WORK=y, because\nexit_task_work() is called before exit_notify(). But the check still\nmakes sense, task_work_add(\u0026tsk-\u003eposix_cputimers_work.work) will fail\nanyway in this case."
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            "baseSeverity": "HIGH",
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            "version": "3.1"
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              "lang": "en",
              "value": "AV:L - The vulnerability is reached purely through local syscalls \u2014 `timer_create`/`timer_settime`/`timer_delete` (or `clock_nanosleep`) plus `ptrace`/`waitpid` to control task reaping \u2014 with the trigger arriving via the local timer tick. There is no network-facing path into posix-cpu-timers.\nAC:L - The attacker controls both sides of the race: it arms the CPU timer expiry, chooses the precise moment of `release_task()` by calling `waitpid()` from its own parent/tracer, and issues the concurrent `timer_delete()` from a sibling thread \u2014 retryable in a tight loop and widenable by queueing up to 20 timers on the firing list. Real-world exploitation of this exact bug confirms it is reliably winnable.\nPR:L - No capability or permission check exists anywhere on the path \u2014 `validate_clock_permissions()`/`pid_for_clock()` gate only on thread-group/pid existence, and `grep` for `capable`/`CAP_` in both posix-timers files returns nothing. Any unprivileged local user, including a seccomp-confined Android app UID, can reach it.\nUI:N - The attacker\u0027s own processes and threads perform every step \u2014 creating the timer, exiting the traced thread, reaping it, and deleting the timer. No victim action of any kind is needed.\nS:U - The use-after-free corrupts kernel heap objects and escalates within the kernel\u0027s own security authority, which is standard kernel privilege escalation. No hypervisor, IOMMU, or other security-authority boundary is crossed.\nC:H - The freed `struct sigqueue` is linked into the signal pending list by `send_sigqueue()` and later copied out to userspace through `dequeue_signal()`/`rt_sigtimedwait()`, disclosing whatever now occupies the reclaimed slab object \u2014 an effectively arbitrary kernel-memory read. The `do_cpu_nanosleep()` variant additionally exposes reclaimed kernel stack.\nI:H - `send_sigqueue()` writes into the freed object (`q-\u003einfo.si_overrun++`) and performs a `list_add_tail()` linked-list insertion on attacker-resprayable memory, followed by a double free on dequeue \u2014 a classic controlled-write primitive leading to full privilege escalation, as demonstrated by in-the-wild exploitation of this flaw.\nA:H - Even without successful exploitation the race causes `BUG_ON(!(q-\u003eflags \u0026 SIGQUEUE_PREALLOC))` in `send_sigqueue()`, `WARN_ON_ONCE()` in the delete path, list corruption, and a double free \u2014 any of which oops or panic the kernel. Spinning the race is trivially repeatable as a denial of service."
            }
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        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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          "url": "https://git.kernel.org/stable/c/78a4b8e3795b31dae58762bc091bb0f4f74a2200"
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          "url": "https://git.kernel.org/stable/c/c076635b3a42771ace7d276de8dc3bc76ee2ba1b"
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          "url": "https://git.kernel.org/stable/c/2f3daa04a9328220de46f0d5c919a6c0073a9f0b"
        },
        {
          "url": "https://git.kernel.org/stable/c/764a7a5dfda23f69919441f2eac2a83e7db6e5bb"
        },
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          "url": "https://git.kernel.org/stable/c/2c72fe18cc5f9f1750f5bc148cf1c94c29e106ff"
        },
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        },
        {
          "url": "https://git.kernel.org/stable/c/f90fff1e152dedf52b932240ebbd670d83330eca"
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      "title": "posix-cpu-timers: fix race between handle_posix_cpu_timers() and posix_cpu_timer_del()",
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    "assignerShortName": "Linux",
    "cveId": "CVE-2025-38352",
    "datePublished": "2025-07-22T08:04:25.277Z",
    "dateReserved": "2025-04-16T04:51:24.006Z",
    "dateUpdated": "2026-09-08T15:32:28.302Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

RHSA-2025:15471

CVE-2022-49985 (GCVE-0-2022-49985)

CVE-2025-38352 (GCVE-0-2025-38352)

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