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ALSA-2026:67471 — Important: kernel security, bug fix, and enhancement update

Affected: AlmaLinux:10: kernel, AlmaLinux:10: kernel-64k, AlmaLinux:10: kernel-64k-core, AlmaLinux:10: kernel-64k-debug, AlmaLinux:10: kernel-64k-debug-core, AlmaLinux:10: kernel-64k-debug-devel, AlmaLinux:10: kernel-64k-debug-devel-matched, AlmaLinux:10: kernel-64k-debug-modules, AlmaLinux:10: kernel-64k-debug-modules-core, AlmaLinux:10: kernel-64k-debug-modules-extra and 65 more

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock() (CVE-2025-40149) * kernel: Linux kernel: Denial of Service in qla2xxx SCSI driver due to improper command handling after chip reset (CVE-2025-68745) * kernel: drm/xe: Open-code GGTT MMIO access protection (CVE-2026-23466) * kernel: drm/xe: always keep track of remap prev/next (CVE-2026-31479) * kernel: drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib (CVE-2026-31566) * kernel: xfrm: hold dev ref until after transport_finish NF_HOOK (CVE-2026-31663) * kernel: drm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat (CVE-2026-31656) * kernel: smb: smbdirect: introduce smbdirect_socket.recv_io.credits.available (CVE-2026-31539) * kernel: vhost: move vdpa group bound check to vhost_vdpa (CVE-2026-43248) * kernel: drm/i915: Fix potential overflow of shmem scatterlist length (CVE-2026-43368) * kernel: drm/amdgpu: Fix use-after-free race in VM acquire (CVE-2026-43370) * kernel: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() (CVE-2026-46149) * kernel: sctp: purge outqueue on stale COOKIE-ECHO handling (CVE-2026-52924) * kernel: netfilter: require Ethernet MAC header before using eth_hdr() (CVE-2026-53131) * kernel: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing (CVE-2026-53246) * kernel: xfr…

BELL-CVE-2026-53239

Affected: Alpaquita:23: linux-lts, Alpaquita:25: linux-lts, Alpaquita:stream: linux-lts

certfr-2026-avi-0812 — De multiples vulnérabilités ont été découvertes dans Microsoft Azure Linux. Elles permettent à un attaquant de provoque…

certfr-2026-avi-0812

EUVD-2026-364844

fkie_cve-2026-53239

In the Linux kernel, the following vulnerability has been resolved:

xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx()

Fix the race by pruning the bin while still holding xfrm_policy_lock, before dropping it. Use __xfrm_policy_inexact_prune_bin() directly since the lock is already held. The wrapper xfrm_policy_inexact_prune_bin() becomes unused and is removed.

Race:

CPU0 (XFRM_MSG_DELPOLICY) CPU1 (XFRM_MSG_NEWSPDINFO) ========================== ========================== xfrm_policy_bysel_ctx(): spin_lock_bh(xfrm_policy_lock) bin = xfrm_policy_inexact_lookup() __xfrm_policy_unlink(pol) spin_unlock_bh(xfrm_policy_lock) xfrm_policy_kill(ret) // wide window, lock not held xfrm_hash_rebuild(): spin_lock_bh(xfrm_policy_lock) __xfrm_policy_inexact_flush(): kfree_rcu(bin) // bin freed spin_unlock_bh(xfrm_policy_lock) xfrm_policy_inexact_prune_bin(bin) // UAF: bin is freed

GHSA-qmj7-fh92-4787

In the Linux kernel, the following vulnerability has been resolved:

xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx()

Race:

msrc_CVE-2026-53239 — xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx()

msrc_CVE-2026-53239

OESA-2026-3204 — kernel security update

Affected: openEuler:24.03-LTS-SP1: kernel

The Linux Kernel, the operating system core itself. Security Fix(es):

In the Linux kernel, the following vulnerability has been resolved:

wifi: rtw88: Use devm_kmemdup() in rtw_set_supported_band()

Simplify the code by using device managed memory allocations.

This also fixes a memory leak in rtw_register_hw(). The supported bands were not freed in the error path.

Copied from commit 145df52a8671 ("wifi: rtw89: Convert rtw89_core_set_supported_band to use devm_*").(CVE-2025-71273)

In the Linux kernel, the following vulnerability has been resolved:

xfrm: hold dev ref until after transport_finish NF_HOOK

After async crypto completes, xfrm_input_resume() calls dev_put() immediately on re-entry before the skb reaches transport_finish. The skb->dev pointer is then used inside NF_HOOK and its okfn, which can race with device teardown.

Remove the dev_put from the async resumption entry and instead drop the reference after the NF_HOOK call in transport_finish, using a saved device pointer since NF_HOOK may consume the skb. This covers NF_DROP, NF_QUEUE and NF_STOLEN paths that skip the okfn.

For non-transport exits (decaps, gro, drop) and secondary async return points, release the reference inline when async is set.(CVE-2026-31663)

In the Linux kernel, the following vulnerability has been resolved:

x86: shadow stacks: proper error handling for mmap lock

김영민 reports that shstk_pop_sigframe() doesn't check for errors from mmap_read_lock_killable(), whic…

openSUSE-SU-2026:21555-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

RHSA-2026:68532 — Red Hat Security Advisory: kernel-rt security update

kernel: ipvlan: Make the addrs_lock be per port kernel: xfrm: hold dev ref until after transport_finish NF_HOOK kernel: netfilter: nf_conntrack_h323: fix OOB read in decode_choice() kernel: ipv6: prevent possible UaF in addrconf_permanent_addr() kernel: inet: RAW sockets using IPPROTO_RAW MUST drop incoming ICMP kernel: flow_dissector: do not dissect PPPoE PFC frames kernel: netfilter: xt_policy: fix strict mode inbound policy matching kernel: ppp: require CAP_NET_ADMIN in target netns for unattached ioctls kernel: netfilter: require Ethernet MAC header before using eth_hdr() kernel: IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN kernel: ALSA: timer: Fix UAF at snd_timer_user_params() kernel: net: guard timestamp cmsgs to real error queue skbs kernel: ipv6: sit: reload inner IPv6 header after GSO offloads kernel: xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx() kernel: netfilter: conntrack_irc: fix possible out-of-bounds read kernel: ipv6: mcast: Fix use-after-free when processing MLD queries kernel: ip6: vti: Use ip6_tnl.net in vti6_changelink() kernel: xfrm: input: hold netns during deferred transport reinjection kernel: ip6: vti: Use ip6_tnl.net in vti6_siocdevprivate() kernel: ipv4: free net->ipv4.sysctl_local_reserved_ports after unregister_net_sysctl_table() kernel: Linux kernel SLIP: Out-of-bounds write due to race condition during MTU change kernel: xfrm: fix stale skb->prev after async crypto steals a GSO segment kernel: net: qrt…

RLSA-2026:67471 — Important: kernel security, bug fix, and enhancement update

Affected: Rocky Linux:10: kernel

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* kernel: tls: Use __sk_dst_get() and dst_dev_rcu() in get_netdev_for_sock() (CVE-2025-40149)

* kernel: Linux kernel: Denial of Service in qla2xxx SCSI driver due to improper command handling after chip reset (CVE-2025-68745)

* kernel: drm/xe: Open-code GGTT MMIO access protection (CVE-2026-23466)

* kernel: drm/xe: always keep track of remap prev/next (CVE-2026-31479)

* kernel: drm/amdgpu: Fix fence put before wait in amdgpu_amdkfd_submit_ib (CVE-2026-31566)

* kernel: xfrm: hold dev ref until after transport_finish NF_HOOK (CVE-2026-31663)

* kernel: drm/i915/gt: fix refcount underflow in intel_engine_park_heartbeat (CVE-2026-31656)

* kernel: smb: smbdirect: introduce smbdirect_socket.recv_io.credits.available (CVE-2026-31539)

* kernel: vhost: move vdpa group bound check to vhost_vdpa (CVE-2026-43248)

* kernel: drm/i915: Fix potential overflow of shmem scatterlist length (CVE-2026-43368)

* kernel: drm/amdgpu: Fix use-after-free race in VM acquire (CVE-2026-43370)

* kernel: scsi: target: configfs: Bound snprintf() return in tg_pt_gp_members_show() (CVE-2026-46149)

* kernel: sctp: purge outqueue on stale COOKIE-ECHO handling (CVE-2026-52924)

* kernel: netfilter: require Ethernet MAC header before using eth_hdr() (CVE-2026-53131)

* kernel: sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing (CVE-2026-53246)

* kernel: xfrm: policy: fix use-af…

SSA-019113 — SSA-019113: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.6

Multiple vulnerabilities have been identified in the additional GNU/Linux subsystem of the firmware version V3.1.6 for the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP (incl. SIPLUS variant).

Siemens has released new versions for several affected products and recommends to update to the latest versions. Siemens is preparing further fix versions and recommends specific countermeasures for products where fixes are not, or not yet available.

SUSE-SU-2026:23066-1 — Security update for the Linux Kernel

Security update for the Linux Kernel

UBUNTU-CVE-2026-53239

Affected: Ubuntu:16.04:LTS: linux-hwe-edge, Ubuntu:18.04:LTS: linux-aws-5.0, Ubuntu:18.04:LTS: linux-aws-5.3, Ubuntu:Pro:18.04:LTS: linux-aws-5.4, Ubuntu:18.04:LTS: linux-azure, Ubuntu:18.04:LTS: linux-azure-5.3, Ubuntu:Pro:18.04:LTS: linux-azure-5.4, Ubuntu:18.04:LTS: linux-azure-edge, Ubuntu:18.04:LTS: linux-gcp, Ubuntu:18.04:LTS: linux-gcp-5.3 and 228 more

In the Linux kernel, the following vulnerability has been resolved: xfrm: policy: fix use-after-free on inexact bin in xfrm_policy_bysel_ctx() Fix the race by pruning the bin while still holding xfrm_policy_lock, before dropping it. Use __xfrm_policy_inexact_prune_bin() directly since the lock is already held. The wrapper xfrm_policy_inexact_prune_bin() becomes unused and is removed. Race: CPU0 (XFRM_MSG_DELPOLICY) CPU1 (XFRM_MSG_NEWSPDINFO) ========================== ========================== xfrm_policy_bysel_ctx(): spin_lock_bh(xfrm_policy_lock) bin = xfrm_policy_inexact_lookup() __xfrm_policy_unlink(pol) spin_unlock_bh(xfrm_policy_lock) xfrm_policy_kill(ret) // wide window, lock not held xfrm_hash_rebuild(): spin_lock_bh(xfrm_policy_lock) __xfrm_policy_inexact_flush(): kfree_rcu(bin) // bin freed spin_unlock_bh(xfrm_policy_lock) xfrm_policy_inexact_prune_bin(bin) // UAF: bin is freed

WID-SEC-W-2026-2077 — Linux Kernel: Mehrere Schwachstellen

Ein entfernter Angreifer kann mehrere Schwachstellen im Linux Kernel ausnutzen, um Sicherheitsvorkehrungen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen und weitere, nicht näher spezifizierte Auswirkungen zu erzielen.