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Red Hat Security Advisory

RHSA-2026:19521

kernel security update

Released 2026-05-20 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 9 records

Priority CRITICAL 93KEV

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: preserve shared-frag marker during coalescing skb_try_coalesce() can attach paged frags from @from to @to.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.1613 Published 2026-05-23 Fixed in 5.10.257, 5.15.208 +6 CWE-456
Priority HIGH 66

In the Linux kernel, the following vulnerability has been resolved: ptrace: slightly saner 'get_dumpable()' logic The 'dumpability' of a task is fundamentally about the memory image of the task - the concept comes from w…

CVSS 3.1HIGH 7.1 Local Low privileges No interaction EPSS 0.04299 Published 2026-05-15 Partial fix · 3.17, 4.5 +10 CWE-269
Priority MEDIUM 44

In the Linux kernel, the following vulnerability has been resolved: net: skbuff: propagate shared-frag marker through frag-transfer helpers Two frag-transfer helpers (__pskb_copy_fclone() and skb_shift()) fail to propaga…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.01987 Published 2026-05-23 Fixed in 5.10.257, 5.15.208 +6 CWE-691
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: can: raw: fix ro->uniq use-after-free in raw_rcv() raw_release() unregisters raw CAN receive filters via can_rx_unregister(), but receiver deletion is d…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00165 Published 2026-04-23 Fixed in 5.10.258, 5.15.209 +7 CWE-416
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: net: bonding: fix use-after-free in bond_xmit_broadcast() bond_xmit_broadcast() reuses the original skb for the last slave (determined by bond_is_last_s…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00129 Published 2026-04-13 Partial fix · 5.10.273, 5.15.224 +7 CWE-362
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: RDMA/umad: Reject negative data_len in ib_umad_write ib_umad_write computes data_len from user-controlled count and the MAD header sizes.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.0018 Published 2026-03-18 Partial fix · 5.10.252, 5.15.202 +6 CWE-190
TI-2026-18628 CVE-2026-23191 · GHSA-x3gh-q355-f5px

ALSA: aloop: Fix racy access at PCM trigger

Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: ALSA: aloop: Fix racy access at PCM trigger The PCM trigger callback of aloop driver tries to check the PCM state and stop the stream of the tied substr…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00133 Published 2026-02-14 Partial fix · 5.10.270, 5.15.221 +5 CWE-362
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: RDMA/rxe: Fix slab-use-after-free Read in rxe_queue_cleanup bug Call Trace: <TASK> __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0x7d/0xa0 li…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00229 Published 2025-06-18 Partial fix · 5.4.294, 5.10.238 +6 CWE-416
Priority LOW 24

In the Linux kernel, the following vulnerability has been resolved: KVM: x86/mmu: Drop/zap existing present SPTE even when creating an MMIO SPTE When installing an emulated MMIO SPTE, do so *after* dropping/zapping the e…

CVSS 3.1MEDIUM 5.5 Local Low privileges No interaction EPSS 0.00191 Published 2026-04-01 Partial fix · 5.15.203, 6.1.168 +5