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Red Hat Security Advisory

RHSA-2026:55445

kernel security, bug fix, and enhancement update

Released 2026-08-17 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 12 records

Priority HIGH 69

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_api: use RCU with deferred freeing for action lifecycle When NEWTFILTER and DELFILTER are run concurrently it is possible to create a rac…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00485 Published 2026-06-25 Partial fix · 5.10.259, 5.15.210 +6 CWE-416
Priority MEDIUM 48

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() In DecodeQ931(), the UserUserIE code path reads a 16-bit length from the packet, the…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.01587 Published 2026-04-03 Partial fix · 5.10.253, 5.15.203 +6 CWE-125
TI-2025-09419 CVE-2025-10263 · GHSA-x9c8-763w-495x

Race condition in Arm C1-Ultra

Priority MEDIUM 48

Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925, Cortex-X4, Cortex-X3, Cortex-X2, Cortex-X1 & X1C, Cortex-A710, Cortex-A78, A78AE & A78C, Cortex-A77, Cortex-A…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00544 Published 2026-06-09 Partial fix CWE-362
TI-2026-38087 CVE-2026-53000 · GHSA-6794-4vqv-w8qg

netfilter: nat: use kfree_rcu to release ops

Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: netfilter: nat: use kfree_rcu to release ops Florian Westphal says: "Historically this is not an issue, even for normal base hooks: the data path doesn'…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00183 Published 2026-06-24 Partial fix · 6.1.191, 6.6.160 +4 CWE-763
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: ALSA: usb-audio: Add sanity check for OOB writes at silencing At silencing the playback URB packets in the implicit fb mode before the actual playback,…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00123 Published 2026-05-06 Partial fix · 5.15.202, 6.1.165 +5 CWE-787
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Do not skip unrelated mode changes in DSC validation Starting with commit 17ce8a6907f7 ("drm/amd/display: Add dsc pre-validation in ato…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.0014 Published 2026-04-22 Partial fix · 6.1.175, 6.6.140 +4 CWE-416
TI-2025-43239 CVE-2025-71089 · GHSA-r6cc-j9rp-4f85

iommu: disable SVA when CONFIG_X86 is set

Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: iommu: disable SVA when CONFIG_X86 is set Patch series "Fix stale IOTLB entries for kernel address space", v7.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00162 Published 2026-01-13 Partial fix · 5.10.273, 5.15.200 +5 CWE-416
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: dm log: fix out-of-bounds write due to region_count overflow The local variable region_count in create_log_context() is declared as unsigned int (32-bit…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00141 Published 2026-06-24 Partial fix · 5.10.258, 5.15.209 +6 CWE-787
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: rxrpc: Fix potential UAF after skb_unshare() failure If skb_unshare() fails to unshare a packet due to allocation failure in rxrpc_input_packet(), the s…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00137 Published 2026-05-27 Partial fix · 6.6.140, 6.12.86 +3 CWE-416
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: crypto: seqiv - Do not use req->iv after crypto_aead_encrypt As soon as crypto_aead_encrypt is called, the underlying request may be freed by an asynchr…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00305 Published 2026-01-14 Partial fix · 5.10.248, 5.15.198 +5 CWE-416
Priority LOW 24

In the Linux kernel, the following vulnerability has been resolved: mm: thp: deny THP for files on anonymous inodes file_thp_enabled() incorrectly allows THP for files on anonymous inodes (e.g.

CVSS 3.1MEDIUM 5.5 Local Low privileges No interaction EPSS 0.00123 Published 2026-03-25 Fixed in 6.12.78, 6.18.17 +2 CWE-617
Priority LOW 20

In the Linux kernel, the following vulnerability has been resolved: scsi: core: Wake up the error handler when final completions race against each other The fragile ordering between marking commands completed or failed s…

CVSS 3.1MEDIUM 4.7 Local Low privileges No interaction EPSS 0.00113 Published 2026-02-04 Partial fix · 5.10.249, 6.1.162 +4 CWE-362