Red Hat Security Advisory: kernel security, bug fix, and enhancement update
Affects Red Hat kernel security,Source GCVE Database
Mentioned vulnerabilities
Not known to be exploited · CVSS 7.8 High · fixed in Red Hat package updates : patch Red Hat kernel security, soon.
Data as of 29 Oct 2026, 08:26 UTC
- Patch
- Available – fixed in de8d7a25cd2eb5875b1d8d4fbc7fe4b4138b781f, bfcd6b53e1f4feb182952f4ff9a137c36ceaf20b, b4034442cb090e4a980bdcc1540948606cbc951b +5
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HExploitation evidence
Disclosed: evidence found.
CVE published 6 May 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Upgrade to a fixed release listed under Affected software.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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| LinuxLinux | Affected
| Fixed in
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Description
The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fix(es): * kernel: drm/amdkfd: Fix out-of-bounds write in kfd_event_page_set() (CVE-2026-43206) * kernel: drm/amdgpu: Refactor amdgpu_gem_va_ioctl for Handling Last Fence Update and Timeline Management v4 (CVE-2026-43237) * kernel: crypto: pcrypt - Fix handling of MAY_BACKLOG requests (CVE-2026-43493) * kernel: udf: fix partition descriptor append bookkeeping (CVE-2026-45991) * kernel: drm/amdkfd: Fix watch_id bounds checking in debug address watch v2 (CVE-2026-45878) * kernel: smb/client: fix out-of-bounds read in symlink_data() (CVE-2026-46185) * kernel: sched/psi: fix race between file release and pressure write (CVE-2026-52991) * kernel: drm/amdkfd: Fix buffer overflow in SDMA queue checkpoint/restore on GFX11 (CVE-2026-53143) * kernel: drm/amd/display: Clamp VBIOS HDMI retimer register count to array size (CVE-2026-53136) * kernel: drm/amd/display: Use krealloc_array() in dal_vector_reserve() (CVE-2026-53329) * kernel: drm/i915/gem: Fix phys BO pread/pwrite with offset (CVE-2026-53356) * kernel: drm/amdgpu: zero-initialize GART table on allocation (CVE-2026-53374) * kernel: drm/i915: Fix potential UAF in TTM object purge (CVE-2026-63884) * kernel: scsi: target: iscsi: Validate CHAP_R length before base64 decode (CVE-2026-63886) * kernel: memfd: deny writeable mappings when implying SEAL_WRITE (CVE-2026-63952) * kernel: scsi: target: iscsi: Fix CRC overread and double-free in iscsit_handle_text_cmd() (CVE-2026-63888) * kernel: blk-mq: pop cached request if it is usable (CVE-2026-64017) * kernel: drm/amdgpu: fix amdgpu_hmm_range_get_pages (CVE-2026-63879) * kernel: drm/amd/display: Validate payload length and link_index in dc_process_dmub_aux_transfer_async (CVE-2026-64219) * kernel: smb: client: fix double-free in SMB2_open() replay (CVE-2026-64382) * kernel: smb: client: mask server-provided mode to 07777 in modefromsid (CVE-2026-64379) * kernel: smb: client: fix query_info() replay double-free (CVE-2026-64386) * kernel: posix-cpu-timers: Prevent UAF caused by non-leader exec() race (CVE-2026-64560) * kernel: smb/client: handle overlapping allocated ranges in fallocate (CVE-2026-68388) Bug Fix(es) and Enhancement(s): * CLONE - RHEL 10.2.z xfs: fix exchange-range reflink flag clearing issue with INO1_WRITTEN (JIRA:RHEL-223954) * vhost: reset the vring metadata cache on vring reconfiguration [rhel-10.2.z] (JIRA:RHEL-224545) * cifs: periodic IO errors when rename races with lease break [rhel-10.2.z] (JIRA:RHEL-235459) * cifs: smb1 directory listings from xp server returning EINVAL and EIO [rhel-10.2.z] (JIRA:RHEL-235812) 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.
References
- access.redhat.com/errata/RHSA-2026:57251 (opens in a new tab)
- access.redhat.com/security/updates/classification/ (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2467156 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2467202 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2479812 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2482113 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2482124 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2482558 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2492403 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2492719 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2492768 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2495941 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2495950 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502188 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502321 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502329 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502422 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502443 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502449 (opens in a new tab)
- bugzilla.redhat.com/show_bug.cgi?id=2502463 (opens in a new tab)