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SUSE-SU-2024:3626-1

Vulnerability from csaf_suse - Published: 2024-10-15 02:33 - Updated: 2024-10-15 02:33
Summary
Security update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP6)
Severity
Important
Notes
Title of the patch: Security update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP6)
Description of the patch: This update for the Linux Kernel 6.4.0-150600_10_5 fixes several issues. The following security issues were fixed: - CVE-2024-40954: net: do not leave a dangling sk pointer, when socket creation fails (bsc#1227808) - CVE-2024-40909: bpf: Fix a potential use-after-free in bpf_link_free() (bsc#1228349).
Patchnames: SUSE-2024-3626,SUSE-SLE-Module-Live-Patching-15-SP6-2024-3626
Terms of use: CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).
CVE-2024-40909
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Product Identifier Version Remediation
Unresolved product id: SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_5-rt-3-150600.1.8.1.x86_64 —
Vendor Fix
Threats
Impact important
CVE-2024-40954
7 (High)
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Affected products
Recommended 1 product, the same list as for CVE-2024-40909
Threats
Impact important
References
To clipboard 

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    "distribution": {
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        "text": "This update for the Linux Kernel 6.4.0-150600_10_5 fixes several issues.\n\nThe following security issues were fixed:\n\n- CVE-2024-40954: net: do not leave a dangling sk pointer, when socket creation fails (bsc#1227808)\n- CVE-2024-40909: bpf: Fix a potential use-after-free in bpf_link_free() (bsc#1228349).\n",
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        "title": "Patchnames"
      },
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        "category": "legal_disclaimer",
        "text": "CSAF 2.0 data is provided by SUSE under the Creative Commons License 4.0 with Attribution (CC-BY-4.0).",
        "title": "Terms of use"
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      },
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        "summary": "SUSE Bug 1228349",
        "url": "https://bugzilla.suse.com/1228349"
      },
      {
        "category": "self",
        "summary": "SUSE Bug 1228786",
        "url": "https://bugzilla.suse.com/1228786"
      },
      {
        "category": "self",
        "summary": "SUSE CVE CVE-2024-40909 page",
        "url": "https://www.suse.com/security/cve/CVE-2024-40909/"
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    "title": "Security update for the Linux Kernel RT (Live Patch 1 for SLE 15 SP6)",
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      "id": "SUSE-SU-2024:3626-1",
      "initial_release_date": "2024-10-15T02:33:29Z",
      "revision_history": [
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          "number": "1",
          "summary": "Current version"
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      "status": "final",
      "version": "1"
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              {
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                "name": "kernel-livepatch-6_4_0-150600_10_5-rt-3-150600.1.8.1.x86_64",
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  "vulnerabilities": [
    {
      "cve": "CVE-2024-40909",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2024-40909"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Fix a potential use-after-free in bpf_link_free()\n\nAfter commit 1a80dbcb2dba, bpf_link can be freed by\nlink-\u003eops-\u003edealloc_deferred, but the code still tests and uses\nlink-\u003eops-\u003edealloc afterward, which leads to a use-after-free as\nreported by syzbot. Actually, one of them should be sufficient, so\njust call one of them instead of both. Also add a WARN_ON() in case\nof any problematic implementation.",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_5-rt-3-150600.1.8.1.x86_64"
        ]
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          "category": "external",
          "summary": "CVE-2024-40909",
          "url": "https://www.suse.com/security/cve/CVE-2024-40909"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1227798 for CVE-2024-40909",
          "url": "https://bugzilla.suse.com/1227798"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1228349 for CVE-2024-40909",
          "url": "https://bugzilla.suse.com/1228349"
        }
      ],
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          "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 Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_5-rt-3-150600.1.8.1.x86_64"
          ]
        }
      ],
      "scores": [
        {
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            "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"
          },
          "products": [
            "SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_5-rt-3-150600.1.8.1.x86_64"
          ]
        }
      ],
      "threats": [
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          "category": "impact",
          "date": "2024-10-15T02:33:29Z",
          "details": "important"
        }
      ],
      "title": "CVE-2024-40909"
    },
    {
      "cve": "CVE-2024-40954",
      "ids": [
        {
          "system_name": "SUSE CVE Page",
          "text": "https://www.suse.com/security/cve/CVE-2024-40954"
        }
      ],
      "notes": [
        {
          "category": "general",
          "text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: do not leave a dangling sk pointer, when socket creation fails\n\nIt is possible to trigger a use-after-free by:\n  * attaching an fentry probe to __sock_release() and the probe calling the\n    bpf_get_socket_cookie() helper\n  * running traceroute -I 1.1.1.1 on a freshly booted VM\n\nA KASAN enabled kernel will log something like below (decoded and stripped):\n==================================================================\nBUG: KASAN: slab-use-after-free in __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\nRead of size 8 at addr ffff888007110dd8 by task traceroute/299\n\nCPU: 2 PID: 299 Comm: traceroute Tainted: G            E      6.10.0-rc2+ #2\nHardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.16.2-debian-1.16.2-1 04/01/2014\nCall Trace:\n \u003cTASK\u003e\ndump_stack_lvl (lib/dump_stack.c:117 (discriminator 1))\nprint_report (mm/kasan/report.c:378 mm/kasan/report.c:488)\n? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\nkasan_report (mm/kasan/report.c:603)\n? __sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\nkasan_check_range (mm/kasan/generic.c:183 mm/kasan/generic.c:189)\n__sock_gen_cookie (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-instrumented.h:1611 net/core/sock_diag.c:29)\nbpf_get_socket_ptr_cookie (./arch/x86/include/asm/preempt.h:94 ./include/linux/sock_diag.h:42 net/core/filter.c:5094 net/core/filter.c:5092)\nbpf_prog_875642cf11f1d139___sock_release+0x6e/0x8e\nbpf_trampoline_6442506592+0x47/0xaf\n__sock_release (net/socket.c:652)\n__sock_create (net/socket.c:1601)\n...\nAllocated by task 299 on cpu 2 at 78.328492s:\nkasan_save_stack (mm/kasan/common.c:48)\nkasan_save_track (mm/kasan/common.c:68)\n__kasan_slab_alloc (mm/kasan/common.c:312 mm/kasan/common.c:338)\nkmem_cache_alloc_noprof (mm/slub.c:3941 mm/slub.c:4000 mm/slub.c:4007)\nsk_prot_alloc (net/core/sock.c:2075)\nsk_alloc (net/core/sock.c:2134)\ninet_create (net/ipv4/af_inet.c:327 net/ipv4/af_inet.c:252)\n__sock_create (net/socket.c:1572)\n__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)\n__x64_sys_socket (net/socket.c:1718)\ndo_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nFreed by task 299 on cpu 2 at 78.328502s:\nkasan_save_stack (mm/kasan/common.c:48)\nkasan_save_track (mm/kasan/common.c:68)\nkasan_save_free_info (mm/kasan/generic.c:582)\npoison_slab_object (mm/kasan/common.c:242)\n__kasan_slab_free (mm/kasan/common.c:256)\nkmem_cache_free (mm/slub.c:4437 mm/slub.c:4511)\n__sk_destruct (net/core/sock.c:2117 net/core/sock.c:2208)\ninet_create (net/ipv4/af_inet.c:397 net/ipv4/af_inet.c:252)\n__sock_create (net/socket.c:1572)\n__sys_socket (net/socket.c:1660 net/socket.c:1644 net/socket.c:1706)\n__x64_sys_socket (net/socket.c:1718)\ndo_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83)\nentry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130)\n\nFix this by clearing the struct socket reference in sk_common_release() to cover\nall protocol families create functions, which may already attached the\nreference to the sk object with sock_init_data().",
          "title": "CVE description"
        }
      ],
      "product_status": {
        "recommended": [
          "SUSE Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_5-rt-3-150600.1.8.1.x86_64"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CVE-2024-40954",
          "url": "https://www.suse.com/security/cve/CVE-2024-40954"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1227808 for CVE-2024-40954",
          "url": "https://bugzilla.suse.com/1227808"
        },
        {
          "category": "external",
          "summary": "SUSE Bug 1228786 for CVE-2024-40954",
          "url": "https://bugzilla.suse.com/1228786"
        }
      ],
      "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 Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_5-rt-3-150600.1.8.1.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 Linux Enterprise Live Patching 15 SP6:kernel-livepatch-6_4_0-150600_10_5-rt-3-150600.1.8.1.x86_64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "date": "2024-10-15T02:33:29Z",
          "details": "important"
        }
      ],
      "title": "CVE-2024-40954"
    }
  ]
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

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.