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Red Hat Security Advisory

RHSA-2026:85321

kernel security, bug fix, and enhancement update

Released 2026-10-19 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 19 records

Priority MEDIUM 50

In the Linux kernel, the following vulnerability has been resolved: sctp: auth: verify auth requirement when auth_chunk is NULL sctp_auth_chunk_verify() returns true unconditionally when chunk->auth_chunk is NULL, silent…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.0058 Published 2026-08-10 Partial fix · 5.10.265, 5.15.216 +6 CWE-287
TI-2026-52534 CVE-2026-74752 · GHSA-3494-mfxc-798j

sctp: validate cookie AUTH state before use

Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: sctp: validate cookie AUTH state before use When cookie authentication is disabled, COOKIE_ECHO restores fixed-size AUTH fields directly from peer-contr…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00524 Published 2026-08-26 Partial fix · 6.6.160, 6.12.114 +2
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: sctp: keep chunk->transport in step with the list it is queued on __sctp_outq_flush_rtx() moves a gap-acked chunk onto another transport's transmitted l…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.005 Published 2026-08-22 Partial fix · 5.10.265, 5.15.216 +6
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: tipc: clear sock->sk on the failed-insert path in tipc_sk_create() When tipc_sk_create() fails to insert the new socket (tipc_sk_insert() returns non-ze…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00525 Published 2026-08-10 Partial fix · 5.10.265, 5.15.216 +11 CWE-416
Priority MEDIUM 46

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject a tree connect response whose byte count is too small CIFSTCon() bounds its strnlen() over the byte area with the server's ByteCount…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00491 Published 2026-09-11 Partial fix · 6.1.191, 6.6.160 +4
Priority MEDIUM 43

In the Linux kernel, the following vulnerability has been resolved: ipv4: validate checksum_start before completing checksum If a packet with bad checksum metadata gets into the ipv4 stack, skb_checksum_help can corrupt…

CVSS 3.1CRITICAL 9.3 Local No auth No interaction EPSS 0.00788 Published 2026-10-15 Partial fix · 5.10.272, 5.15.223 +6 CWE-20
Priority MEDIUM 43

In the Linux kernel, the following vulnerability has been resolved: smb: client: fix OOB read/write from unvalidated DataOffset in coalesce_t2() coalesce_t2() computes data pointers directly from server-supplied DataOffs…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00552 Published 2026-09-11 Partial fix · 5.10.273, 5.15.224 +6
Priority MEDIUM 41

In the Linux kernel, the following vulnerability has been resolved: tipc: fix slab-use-after-free Read in tipc_aead_decrypt_done tipc_aead_decrypt() goes straight from tipc_bearer_hold(b) to crypto_aead_decrypt(req) with…

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.00513 Published 2026-07-19 Partial fix · 5.10.260, 5.15.211 +6 CWE-416
Priority MEDIUM 40

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_sync: Fix advertising data UAFs hci_find_adv_instance() returns an adv_info pointer that is valid only while hdev->lock is held.

CVSS 3.1HIGH 8.8 Adjacent network No auth No interaction EPSS 0.00249 Published 2026-08-15 Partial fix · 5.16, 6.1.184 +5
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: sctp: validate stream count in sctp_process_strreset_inreq() When processing a RESET_IN_REQUEST from a peer, sctp_process_strreset_inreq() derives the s…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00512 Published 2026-08-10 Partial fix · 5.10.265, 5.15.216 +6 CWE-190
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: sctp: avoid auth_enable sysctl UAF during netns teardown proc_sctp_do_auth() updates the SCTP control socket after changing net.sctp.auth_enable.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00198 Published 2026-08-10 Partial fix · 5.4.292, 5.10.266 +7 CWE-416
TI-2026-45574 CVE-2026-64009 · GHSA-666q-fgc6-3x4w

xfrm: Check for underflow in xfrm_state_mtu

Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: xfrm: Check for underflow in xfrm_state_mtu Leo Lin reported OOB write issue in esp component: xfrm_state_mtu() returns u32 but performs its arithmetic…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00144 Published 2026-07-19 Partial fix · 5.10.259, 5.15.210 +6 CWE-191
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: sctp: fix race between sctp_wait_for_connect and peeloff sctp_wait_for_connect() drops and re-acquires the socket lock while waiting for the association…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00131 Published 2026-07-19 Partial fix · 5.10.259, 5.15.210 +6 CWE-362
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: xfrm: espintcp: do not reuse an in-progress partial send espintcp keeps a single in-flight transmit in ctx->partial.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00096 Published 2026-06-24 Partial fix · 5.10.259, 5.15.210 +6 CWE-362
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: openvswitch: defer tunnel netdev_put to RCU release ovs_netdev_tunnel_destroy() may run after NETDEV_UNREGISTER already detached the device.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00132 Published 2026-04-25 Partial fix · 5.15.224, 6.1.168 +5 CWE-362
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: exec: Cleanup POSIX timers right after de_thread() A per-thread CPU timer holds a reference to the PID of the thread it is attached to and, while it is…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00185 Published 2026-10-06 Partial fix · 6.1.191, 6.6.158 +4
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: signal: Prevent exec() race Hyunwoo debugged the following KASAN UAF splat: BUG: KASAN: slab-use-after-free in __send_signal_locked+0xb27/0xba0 Write of…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00143 Published 2026-10-06 Fixed in 6.18.54, 7.2.8 +1
Priority LOW 30

In the Linux kernel, the following vulnerability has been resolved: sctp: diag: reject stale associations in dump_one path The SCTP exact sock_diag lookup can hold a transport reference, block on lock_sock(sk), and then…

CVSS 3.1HIGH 7.1 Local Low privileges No interaction EPSS 0.00128 Published 2026-06-24 Partial fix · 5.10.259, 5.15.210 +6 CWE-416
Priority LOW 24

In the Linux kernel, the following vulnerability has been resolved: usb: typec: tcpm: bound altmode_desc[] per iteration in svdm_consume_modes() svdm_consume_modes() checks pmdata->altmodes against the array size once be…

CVSS 3.1MEDIUM 5.5 Local Low privileges No interaction EPSS 0.0016 Published 2026-07-19 Partial fix · 6.1.191, 6.6.160 +4