USN-8646-1: Linux kernel vulnerabilities

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems: - OCFS2 file system; - B.A.T.M.A.N. meshing protocol; - Netfilter; - SCTP protocol; CVE-2026-52914, CVE-2026-53002,...

CVE-2026-72397

A flaw was found in the Linux kernel's hwmon subsystem, specifically within the pmbus/core module. The pmbusdata2regvid function incorrectly hardcoded the VR11 encoding, disregarding the vrmversion configured by the driver. This issue could lead to drivers sending dangerously wrong voltage codes ...

CVE-2026-72395

A flaw was found in the Linux kernel's hwmon pmbus subsystem. A worker designed to batch regulator events can combine multiple distinct hardware fault events into a single bitmask. This combined bitmask is then incorrectly processed by the critical hardware protection function,...

CVE-2026-72426

A flaw was found in the Linux kernel's Berkeley Packet Filter BPF subsystem. The cleanfuncstate function, which manages stack slot cleanup, incorrectly clears metadata for pointer spills. This allows a subsequent read from a partially live stack slot to bypass crucial non-scalar register-fill...

CVE-2026-72137

A flaw was found in the xfrm subsystem of the Linux kernel, specifically within the natkeepalive component. This vulnerability occurs when the natkeepalivesend function attempts to free a network packet buffer skb that may have already been freed by the networking stack. This double free can lead...

GHSA-FQ9C-X968-G278

creationtimestamp| type| source ---|---|--- 2026-08-18 12:38:18+00:00| seen| https://bsky.app/profile/malwareobserver.bsky.social/post/3mteabuvri52e...

CVE-2026-72244

A flaw was found in the Linux kernel's gpu/buddy subsystem. The tryharder memory allocation fallback mechanism could return a memory range whose starting offset did not match the required minimum block size. This incorrect memory alignment could lead to improper memory handling within the kernel,...

CVE-2026-72237

A flaw was found in the Linux kernel. A local user can exploit a vulnerability in the perf subsystem on AMD processors utilizing the Branch Sampling BRS feature. This flaw occurs because the software filtering mechanism for branch records only validates the branch-to address, leaving the...

CVE-2026-72171

A flaw was found in the Linux kernel's Memory Technology Device MTD subsystem, specifically within the slram module. When registerdevice fails during the allocation of a new slrammtdlist entry, a partially initialized entry can remain on the global device list. A subsequent cleanup operation may...

K000162965: Linux kernel vulnerability CVE-2026-63797

Security Advisory Description In the Linux kernel, the following vulnerability has been resolved: rpmsg: char: Fix use-after-free on probe error path rpmsgchrdevprobe stores the newly allocated eptdev in the default endpoint's priv pointer before calling rpmsgchrdeveptdevadd. If...

RLSA-2026:55765 Important: kernel-rt security, bug fix, and enhancement update

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements. Security Fixes: kernel: mm/slub: avoid accessing metadata when pointer is invalid in objecterr CVE-2025-39902 kernel: drm/amdkfd: Fix out-of-bounds write ...

Linux Distros Unpatched Vulnerability : CVE-2026-72450

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - xfrm: validate selector family and prefixlen during match syzbot reported a shift-out-of-bounds in xfrmselectormatch due to AFUNSPEC selector with large prefixl...

Linux Distros Unpatched Vulnerability : CVE-2026-72137

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: xfrm: natkeepalive: avoid double free on send error natkeepalivesend frees the keepalive skb...

Linux Distros Unpatched Vulnerability : CVE-2026-72171

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - mtd: slram: remove failed entries from the device list registerdevice links a new slrammtdlist entry before allocating all of the state needed by the entry. If ...

Unity Linux 20.1050e Security Update: kernel (UTSA-2026-102129)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-102129 advisory. In the Linux kernel, the following vulnerability has been resolved: xfrm: clear trailing padding in buildpolexpire buildexpire clears the trailing padding bytes of...

Linux Distros Unpatched Vulnerability : CVE-2026-72395

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - hwmon: pmbus Fix passing events to regulator core Sashiko reports: Commit 754bd2b4a084 hwmon: pmbus/core Protect regulator operations with mutex introduced a...

Linux Distros Unpatched Vulnerability : CVE-2026-72257

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - ASoC: qcom: q6apm: fix NULL pointer dereference in graphcallback When q6apmfreefragments is called it frees rxdata.buf/txdata.buf and sets them to NULL under...

MiracleLinux 8 : kernel-4.18.0-553.151.1.el8_10 (AXSA:2026-1562:63)

The remote MiracleLinux 8 host has packages installed that are affected by a vulnerability as referenced in the AXSA:2026-1562:63 advisory. kernel: ipc: limit nextid allocation to the valid ID range CVE-2026-52923 Tenable has extracted the preceding description block directly from the MiracleLinu...

Linux Distros Unpatched Vulnerability : CVE-2026-74402

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - crypto: atmel-sha204a - fix blocking and non-blocking rng logic The blocking and non-blocking paths were failing to provide valid entropy due to improper buffer...

Linux Distros Unpatched Vulnerability : CVE-2026-74393

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - In the Linux kernel, the following vulnerability has been resolved: drm/syncobj: Fix memory leak in drmsyncobjfindfence Commit 18226ba52159 drm/syncobj: reject...