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Red Hat Security Advisory

RHSA-2026:19569

kernel security update

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

Fixed in

Fixes 14 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 84

In the Linux kernel, the following vulnerability has been resolved: xfrm: esp: avoid in-place decrypt on shared skb frags MSG_SPLICE_PAGES can attach pages from a pipe directly to an skb.

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.94194 Published 2026-05-08 Fixed in 5.10.255, 5.15.205 +8 CWE-123
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 51

In the Linux kernel, the following vulnerability has been resolved: nfsd: fix heap overflow in NFSv4.0 LOCK replay cache The NFSv4.0 replay cache uses a fixed 112-byte inline buffer (rp_ibuf[NFSD4_REPLAY_ISIZE]) to store…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.01219 Published 2026-04-03 Partial fix · 5.10.253, 5.15.210 +6 CWE-122
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: usbip: validate number_of_packets in usbip_pack_ret_submit() When a USB/IP client receives a RET_SUBMIT response, usbip_pack_ret_submit() unconditionall…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00311 Published 2026-04-24 Partial fix · 2.6.33, 2.6.34 +12 CWE-787
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 MEDIUM 42

In the Linux kernel, the following vulnerability has been resolved: scsi: qla2xxx: Fix improper freeing of purex item In qla2xxx_process_purls_iocb(), an item is allocated via qla27xx_copy_multiple_pkt(), which internall…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.0043 Published 2025-12-24 Fixed in 6.6.120, 6.12.63 +3
Priority MEDIUM 40

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: Fix use-after-free in sco_recv_frame() due to missing sock_hold sco_recv_frame() reads conn->sk under sco_conn_lock() but immediately re…

CVSS 3.1HIGH 8.8 Adjacent network No auth No interaction EPSS 0.00322 Published 2026-04-06 Partial fix · 5.10.265, 5.15.203 +6 CWE-416
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: crypto: asymmetric_keys - prevent overflow in asymmetric_key_generate_id Use check_add_overflow() to guard against potential integer overflows when addi…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00142 Published 2025-12-24 Partial fix · 5.10.248, 5.15.198 +6
Priority LOW 36

In the Linux kernel, the following vulnerability has been resolved: net: af_can: do not leave a dangling sk pointer in can_create() On error can_create() frees the allocated sk object, but sock_init_data() has already at…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00238 Published 2024-12-27 Partial fix · 5.4.287, 5.10.231 +5 CWE-416
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: RDMA/umem: Fix double dma_buf_unpin in failure path In ib_umem_dmabuf_get_pinned_with_dma_device(), the call to ib_umem_dmabuf_map_pages() can fail.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00139 Published 2026-05-06 Partial fix · 6.1.165, 6.6.128 +4 CWE-415
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: net/sched: Only allow act_ct to bind to clsact/ingress qdiscs and shared blocks As Paolo said earlier [1]: "Since the blamed commit below, classify can…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00137 Published 2026-03-18 Partial fix · 5.15.203, 6.1.167 +6 CWE-416
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: net/sched: Make cake_enqueue return NET_XMIT_CN when past buffer_limit The following setup can trigger a WARNING in htb_activate due to the condition: !…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00184 Published 2025-09-11 Partial fix · 5.4.297, 5.10.241 +6
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