RHSA-2026:0532
Vulnerability from csaf_redhat - Published: 2026-01-14 00:26 - Updated: 2026-01-15 03:57Summary
Red Hat Security Advisory: kernel security update
Notes
Topic
An update for kernel is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
The kernel packages contain the Linux kernel, the core of any Linux operating system.
Security Fix(es):
* kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm() (CVE-2025-38724)
* kernel: smb: client: fix race with concurrent opens in rename(2) (CVE-2025-39825)
* kernel: nbd: fix incomplete validation of ioctl arg (CVE-2023-53513)
* kernel: NFSD: Avoid calling OPDESC() with ops->opnum == OP_ILLEGAL (CVE-2023-53680)
* kernel: RDMA/rxe: Fix mr->map double free (CVE-2022-50543)
* kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses (CVE-2023-53675)
* kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv() (CVE-2023-53705)
* kernel: libceph: fix potential use-after-free in have_mon_and_osd_map() (CVE-2025-68285)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.
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"cve": "CVE-2022-50543",
"cwe": {
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"name": "Multiple Releases of Same Resource or Handle"
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"system_name": "Red Hat Bugzilla ID",
"text": "2402222"
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{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nRDMA/rxe: Fix mr-\u003emap double free\n\nrxe_mr_cleanup() which tries to free mr-\u003emap again will be called when\nrxe_mr_init_user() fails:\n\n CPU: 0 PID: 4917 Comm: rdma_flush_serv Kdump: loaded Not tainted 6.1.0-rc1-roce-flush+ #25\n Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.0-0-gd239552ce722-prebuilt.qemu.org 04/01/2014\n Call Trace:\n \u003cTASK\u003e\n dump_stack_lvl+0x45/0x5d\n panic+0x19e/0x349\n end_report.part.0+0x54/0x7c\n kasan_report.cold+0xa/0xf\n rxe_mr_cleanup+0x9d/0xf0 [rdma_rxe]\n __rxe_cleanup+0x10a/0x1e0 [rdma_rxe]\n rxe_reg_user_mr+0xb7/0xd0 [rdma_rxe]\n ib_uverbs_reg_mr+0x26a/0x480 [ib_uverbs]\n ib_uverbs_handler_UVERBS_METHOD_INVOKE_WRITE+0x1a2/0x250 [ib_uverbs]\n ib_uverbs_cmd_verbs+0x1397/0x15a0 [ib_uverbs]\n\nThis issue was firstly exposed since commit b18c7da63fcb (\"RDMA/rxe: Fix\nmemory leak in error path code\") and then we fixed it in commit\n8ff5f5d9d8cf (\"RDMA/rxe: Prevent double freeing rxe_map_set()\") but this\nfix was reverted together at last by commit 1e75550648da (Revert\n\"RDMA/rxe: Create duplicate mapping tables for FMRs\")\n\nSimply let rxe_mr_cleanup() always handle freeing the mr-\u003emap once it is\nsuccessfully allocated.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: RDMA/rxe: Fix mr-\u003emap double free",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The issue arises because of incorrect error handling in the memory region registration path. When rxe_reg_user_mr() calls rxe_mr_init_user() and initialization fails, the error path frees the mr-\u003emap structure. However, the cleanup then calls rxe_mr_cleanup() through __rxe_cleanup(), which attempts to free mr-\u003emap again, resulting in a double-free. This vulnerability was introduced when a previous fix for duplicate mapping tables was reverted, inadvertently reintroducing the double-free condition. Under normal circumstances, a local user with permissions to use RDMA verbs (typically requiring membership in the rdma group or CAP_IPC_LOCK capability) can trigger this by registering user memory regions with specific parameters that cause initialization failure. Double-free vulnerabilities are well-known memory corruption primitives; while direct exploitation for privilege escalation requires understanding kernel heap layout, they provide attackers with a foundation for more sophisticated attacks beyond simple denial of service.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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{
"category": "vendor_fix",
"date": "2026-01-14T00:26:00+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:0532"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent the rdma_rxe module from loading. See https://access.redhat.com/solutions/41278 for instructions on blacklisting kernel modules.",
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}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.8,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: RDMA/rxe: Fix mr-\u003emap double free"
},
{
"cve": "CVE-2023-53513",
"cwe": {
"id": "CWE-190",
"name": "Integer Overflow or Wraparound"
},
"discovery_date": "2025-10-01T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2400795"
}
],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nnbd: fix incomplete validation of ioctl arg\n\nWe tested and found an alarm caused by nbd_ioctl arg without verification.\nThe UBSAN warning calltrace like below:\n\nUBSAN: Undefined behaviour in fs/buffer.c:1709:35\nsigned integer overflow:\n-9223372036854775808 - 1 cannot be represented in type \u0027long long int\u0027\nCPU: 3 PID: 2523 Comm: syz-executor.0 Not tainted 4.19.90 #1\nHardware name: linux,dummy-virt (DT)\nCall trace:\n dump_backtrace+0x0/0x3f0 arch/arm64/kernel/time.c:78\n show_stack+0x28/0x38 arch/arm64/kernel/traps.c:158\n __dump_stack lib/dump_stack.c:77 [inline]\n dump_stack+0x170/0x1dc lib/dump_stack.c:118\n ubsan_epilogue+0x18/0xb4 lib/ubsan.c:161\n handle_overflow+0x188/0x1dc lib/ubsan.c:192\n __ubsan_handle_sub_overflow+0x34/0x44 lib/ubsan.c:206\n __block_write_full_page+0x94c/0xa20 fs/buffer.c:1709\n block_write_full_page+0x1f0/0x280 fs/buffer.c:2934\n blkdev_writepage+0x34/0x40 fs/block_dev.c:607\n __writepage+0x68/0xe8 mm/page-writeback.c:2305\n write_cache_pages+0x44c/0xc70 mm/page-writeback.c:2240\n generic_writepages+0xdc/0x148 mm/page-writeback.c:2329\n blkdev_writepages+0x2c/0x38 fs/block_dev.c:2114\n do_writepages+0xd4/0x250 mm/page-writeback.c:2344\n\nThe reason for triggering this warning is __block_write_full_page()\n-\u003e i_size_read(inode) - 1 overflow.\ninode-\u003ei_size is assigned in __nbd_ioctl() -\u003e nbd_set_size() -\u003e bytesize.\nWe think it is necessary to limit the size of arg to prevent errors.\n\nMoreover, __nbd_ioctl() -\u003e nbd_add_socket(), arg will be cast to int.\nAssuming the value of arg is 0x80000000000000001) (on a 64-bit machine),\nit will become 1 after the coercion, which will return unexpected results.\n\nFix it by adding checks to prevent passing in too large numbers.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: nbd: fix incomplete validation of ioctl arg",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-53513"
},
{
"category": "external",
"summary": "RHBZ#2400795",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2400795"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-53513",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53513"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-53513",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53513"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2025100130-CVE-2023-53513-4667@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2025100130-CVE-2023-53513-4667@gregkh/T"
}
],
"release_date": "2025-10-01T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-01-14T00:26:00+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:0532"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: nbd: fix incomplete validation of ioctl arg"
},
{
"cve": "CVE-2023-53675",
"discovery_date": "2025-10-07T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2402293"
}
],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nscsi: ses: Fix possible desc_ptr out-of-bounds accesses\n\nSanitize possible desc_ptr out-of-bounds accesses in\nses_enclosure_data_process().",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The ses_enclosure_data_process() routine did not sufficiently validate descriptor pointer positions before dereferencing them, which could allow the parser to read beyond the buffer when a device or crafted input reports malformed enclosure pages. The fix adds strict pointer and length checks to avoid out-of-bounds accesses.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-53675"
},
{
"category": "external",
"summary": "RHBZ#2402293",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402293"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-53675",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53675"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-53675",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53675"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2025100707-CVE-2023-53675-e7ac@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2025100707-CVE-2023-53675-e7ac@gregkh/T"
}
],
"release_date": "2025-10-07T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-01-14T00:26:00+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:0532"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent module ses from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.",
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{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: scsi: ses: Fix possible desc_ptr out-of-bounds accesses"
},
{
"cve": "CVE-2023-53680",
"discovery_date": "2025-10-07T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2402213"
}
],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nNFSD: Avoid calling OPDESC() with ops-\u003eopnum == OP_ILLEGAL\n\nOPDESC() simply indexes into nfsd4_ops[] by the op\u0027s operation\nnumber, without range checking that value. It assumes callers are\ncareful to avoid calling it with an out-of-bounds opnum value.\n\nnfsd4_decode_compound() is not so careful, and can invoke OPDESC()\nwith opnum set to OP_ILLEGAL, which is 10044 -- well beyond the end\nof nfsd4_ops[].",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: NFSD: Avoid calling OPDESC() with ops-\u003eopnum == OP_ILLEGAL",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "NFSD could call OPDESC() with opnum == OP_ILLEGAL, indexing past nfsd4_ops[] and causing an out-of-bounds read leading to a crash. A remote unauthenticated NFSv4 client could trigger this via a crafted COMPOUND, impacting availability of the NFS server. The fix sets op-\u003eopdesc = NULL, assigns opdesc only when opnum is in range, and removes the unconditional OPDESC() call.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-53680"
},
{
"category": "external",
"summary": "RHBZ#2402213",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2402213"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-53680",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53680"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-53680",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53680"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2025100708-CVE-2023-53680-501d@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2025100708-CVE-2023-53680-501d@gregkh/T"
}
],
"release_date": "2025-10-07T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-01-14T00:26:00+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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},
"url": "https://access.redhat.com/errata/RHSA-2026:0532"
},
{
"category": "workaround",
"details": "To mitigate this issue, prevent module nfs from being loaded. Please see https://access.redhat.com/solutions/41278 for how to blacklist a kernel module to prevent it from loading automatically.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 7.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
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],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: NFSD: Avoid calling OPDESC() with ops-\u003eopnum == OP_ILLEGAL"
},
{
"cve": "CVE-2023-53705",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"discovery_date": "2025-10-22T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2405713"
}
],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: Fix out-of-bounds access in ipv6_find_tlv()\n\noptlen is fetched without checking whether there is more than one byte to parse.\nIt can lead to out-of-bounds access.\n\nFound by InfoTeCS on behalf of Linux Verification Center\n(linuxtesting.org) with SVACE.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "The function ipv6_find_tlv() parsed IPv6 extension headers without checking that at least two bytes were available before reading the option length field.\nAn attacker could send a malformed IPv6 packet with a truncated extension header, causing an out-of-bounds read and potential kernel crash or memory fault while parsing.\nThe fix adds a length check (if (len \u003c 2) goto bad;) before accessing the second byte, preventing buffer overrun.\nThis issue is remotely triggerable via network traffic and can lead to kernel panic (DoS) or, in rare cases, information leakage through speculative execution paths.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-53705"
},
{
"category": "external",
"summary": "RHBZ#2405713",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2405713"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-53705",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-53705"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-53705",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-53705"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2025102212-CVE-2023-53705-38d9@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2025102212-CVE-2023-53705-38d9@gregkh/T"
}
],
"release_date": "2025-10-22T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-01-14T00:26:00+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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},
"url": "https://access.redhat.com/errata/RHSA-2026:0532"
},
{
"category": "workaround",
"details": "Mitigation for this issue is either not available or the currently available options don\u0027t meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.",
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"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.3,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: ipv6: Fix out-of-bounds access in ipv6_find_tlv()"
},
{
"cve": "CVE-2025-38724",
"cwe": {
"id": "CWE-367",
"name": "Time-of-check Time-of-use (TOCTOU) Race Condition"
},
"discovery_date": "2025-09-04T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2393172"
}
],
"notes": [
{
"category": "description",
"text": "A vulnerability has been identified in the Linux kernel\u0027s Network File System (NFS) daemon that could allow for a Denial of Service and in worst case scenario Arbitrary Code Execution. This Use-After-Free flaw arises from a race condition when the kernel handles the confirmation of an NFS client identifier. If an NFS client is expiring while this confirmation is in progress, the system can attempt to use memory that is no longer allocated.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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},
"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2025-38724"
},
{
"category": "external",
"summary": "RHBZ#2393172",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2393172"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2025-38724",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-38724"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-38724",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-38724"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2025090401-CVE-2025-38724-5309@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2025090401-CVE-2025-38724-5309@gregkh/T"
}
],
"release_date": "2025-09-04T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-01-14T00:26:00+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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},
"url": "https://access.redhat.com/errata/RHSA-2026:0532"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: nfsd: handle get_client_locked() failure in nfsd4_setclientid_confirm()"
},
{
"cve": "CVE-2025-39825",
"cwe": {
"id": "CWE-366",
"name": "Race Condition within a Thread"
},
"discovery_date": "2025-09-16T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2395792"
}
],
"notes": [
{
"category": "description",
"text": "In the Linux kernel, the following vulnerability has been resolved:\n\nsmb: client: fix race with concurrent opens in rename(2)\n\nBesides sending the rename request to the server, the rename process\nalso involves closing any deferred close, waiting for outstanding I/O\nto complete as well as marking all existing open handles as deleted to\nprevent them from deferring closes, which increases the race window\nfor potential concurrent opens on the target file.\n\nFix this by unhashing the dentry in advance to prevent any concurrent\nopens on the target.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: smb: client: fix race with concurrent opens in rename(2)",
"title": "Vulnerability summary"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
"product_status": {
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2025-39825"
},
{
"category": "external",
"summary": "RHBZ#2395792",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2395792"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2025-39825",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-39825"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-39825",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-39825"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2025091616-CVE-2025-39825-8a7a@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2025091616-CVE-2025-39825-8a7a@gregkh/T"
}
],
"release_date": "2025-09-16T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-01-14T00:26:00+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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"url": "https://access.redhat.com/errata/RHSA-2026:0532"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
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"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "kernel: smb: client: fix race with concurrent opens in rename(2)"
},
{
"cve": "CVE-2025-68285",
"cwe": {
"id": "CWE-825",
"name": "Expired Pointer Dereference"
},
"discovery_date": "2025-12-16T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2422801"
}
],
"notes": [
{
"category": "description",
"text": "A use-after-free vulnerability was found in the Ceph client session initialization in the Linux kernel. The have_mon_and_osd_map() function checks map epochs without holding the appropriate locks, racing with concurrent map updates that free the old map. This can result in dereferencing freed memory during CephFS or RBD mount operations.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "This race condition occurs during Ceph client session establishment. Exploitation is timing-dependent and requires concurrent map updates during mount, making practical exploitation difficult but not impossible.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2025-68285"
},
{
"category": "external",
"summary": "RHBZ#2422801",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2422801"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2025-68285",
"url": "https://www.cve.org/CVERecord?id=CVE-2025-68285"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2025-68285",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2025-68285"
},
{
"category": "external",
"summary": "https://lore.kernel.org/linux-cve-announce/2025121638-CVE-2025-68285-8339@gregkh/T",
"url": "https://lore.kernel.org/linux-cve-announce/2025121638-CVE-2025-68285-8339@gregkh/T"
}
],
"release_date": "2025-12-16T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2026-01-14T00:26:00+00:00",
"details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nThe system must be rebooted for this update to take effect.",
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],
"restart_required": {
"category": "machine"
},
"url": "https://access.redhat.com/errata/RHSA-2026:0532"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 7.0,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
"version": "3.1"
},
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]
}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "kernel: libceph: fix potential use-after-free in have_mon_and_osd_map()"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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.
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