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Red Hat Security Advisory

RHSA-2026:26462

kernel-rt security update

Released 2026-06-17 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 21 records

Priority HIGH 69

In the Linux kernel, the following vulnerability has been resolved: smb: client: reject userspace cifs.spnego descriptions cifs.spnego key descriptions contain authority-bearing fields such as pid, uid, creduid, and upca…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00413 Published 2026-06-01 Fixed in 5.10.258, 5.15.209 +6 CWE-20
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: libceph: prevent potential out-of-bounds reads in handle_auth_done() Perform an explicit bounds check on payload_len to avoid a possible out-of-bounds a…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00407 Published 2026-01-23 Partial fix · 5.15.198, 6.1.161 +4 CWE-125
Priority MEDIUM 48

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_h323: check for zero length in DecodeQ931() In DecodeQ931(), the UserUserIE code path reads a 16-bit length from the packet, the…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.01587 Published 2026-04-03 Partial fix · 5.10.253, 5.15.203 +6 CWE-125
Priority MEDIUM 47

In the Linux kernel, the following vulnerability has been resolved: netfilter: ip6t_eui64: reject invalid MAC header for all packets `eui64_mt6()` derives a modified EUI-64 from the Ethernet source address and compares i…

CVSS 3.1CRITICAL 9.4 Network No auth No interaction EPSS 0.00485 Published 2026-04-25 Partial fix · 5.10.258, 5.15.209 +6 CWE-125
Priority MEDIUM 42

In the Linux kernel, the following vulnerability has been resolved: netfilter: xt_tcpmss: check remaining length before reading optlen Quoting reporter: In net/netfilter/xt_tcpmss.c (lines 53-68), the TCP option parser r…

CVSS 3.1HIGH 8.2 Network No auth No interaction EPSS 0.00463 Published 2026-05-06 Partial fix · 5.10.252, 5.15.202 +6 CWE-125
Priority MEDIUM 40

In the Linux kernel, the following vulnerability has been resolved: wifi: mac80211: remove station if connection prep fails If connection preparation fails for MLO connections, then the interface is completely reset to n…

CVSS 3.1HIGH 8.8 Adjacent network No auth No interaction EPSS 0.00303 Published 2026-05-28 Partial fix · 6.1.176, 6.6.140 +4 CWE-416
Priority MEDIUM 40

In the Linux kernel, the following vulnerability has been resolved: xfs: fix freemap adjustments when adding xattrs to leaf blocks xfs/592 and xfs/794 both trip this assertion in the leaf block freemap adjustment code af…

CVSS 3.1HIGH 8.8 Network Low privileges No interaction EPSS 0.00469 Published 2026-05-06 Partial fix · 5.10.252, 5.15.202 +6 CWE-664
Priority MEDIUM 40

In the Linux kernel, the following vulnerability has been resolved: wifi: brcmfmac: validate bsscfg indices in IF events brcmf_fweh_handle_if_event() validates the firmware-provided interface index before it touches drvr…

CVSS 3.1HIGH 8.8 Adjacent network No auth No interaction EPSS 0.0027 Published 2026-05-06 Partial fix · 5.10.258, 5.15.209 +6 CWE-129
Priority MEDIUM 40

In the Linux kernel, the following vulnerability has been resolved: libceph: make decode_pool() more resilient against corrupted osdmaps If the osdmap is (maliciously) corrupted such that the encoded length of ceph_pg_po…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00458 Published 2026-01-14 Partial fix · 5.10.248, 5.15.198 +5 CWE-125
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: libceph: replace overzealous BUG_ON in osdmap_apply_incremental() If the osdmap is (maliciously) corrupted such that the incremental osdmap epoch is dif…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00403 Published 2026-01-23 Partial fix · 5.10.248, 5.15.198 +5 CWE-400
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
TI-2025-26840 CVE-2025-40170 · GHSA-3vr4-gx8q-4fgg

net: use dst_dev_rcu() in sk_setup_caps()

Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: net: use dst_dev_rcu() in sk_setup_caps() Use RCU to protect accesses to dst->dev from sk_setup_caps() and sk_dst_gso_max_size().

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00193 Published 2025-11-12 Partial fix · 6.1.191, 6.6.160 +3
TI-2025-26828 CVE-2025-40158 · GHSA-4g43-pmw7-v27w

ipv6: use RCU in ip6_output()

Priority LOW 36

In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU in ip6_output() Use RCU in ip6_output() in order to use dst_dev_rcu() to prevent possible UAF.

CVSS 3.1HIGH 8.1 Network No auth No interaction EPSS 0.00555 Published 2025-11-12 Partial fix · 6.1.191, 6.6.160 +3
TI-2025-26806 CVE-2025-40135 · GHSA-q28q-889g-6rx2

ipv6: use RCU in ip6_xmit()

Priority LOW 36

In the Linux kernel, the following vulnerability has been resolved: ipv6: use RCU in ip6_xmit() Use RCU in ip6_xmit() in order to use dst_dev_rcu() to prevent possible UAF.

CVSS 3.1HIGH 8.1 Network No auth No interaction EPSS 0.0071 Published 2025-11-12 Partial fix · 5.15.224, 6.1.167 +4
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: sctp: revalidate list cursor after sctp_sendmsg_to_asoc() in SCTP_SENDALL The SCTP_SENDALL path in sctp_sendmsg() iterates ep->asocs with list_for_each_…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00104 Published 2026-05-28 Fixed in 5.10.258, 5.15.209 +6 CWE-362
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: mm/page_alloc: clear page->private in free_pages_prepare() Several subsystems (slub, shmem, ttm, etc.) use page->private but don't clear it before freei…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00172 Published 2026-05-08 Partial fix · 6.1.176, 6.6.143 +4 CWE-457
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: netfilter: ctnetlink: ensure safe access to master conntrack Holding reference on the expectation is not sufficient, the master conntrack object can jus…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00101 Published 2026-05-06 Partial fix · 6.1.176, 6.6.143 +4 CWE-362
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_tables: release flowtable after rcu grace period on error Call synchronize_rcu() after unregistering the hooks from error path, since a ho…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00165 Published 2026-03-25 Partial fix · 5.10.273, 5.15.224 +6 CWE-416
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: scsi: target: iscsi: Fix use-after-free in iscsit_dec_conn_usage_count() In iscsit_dec_conn_usage_count(), the function calls complete() while holding t…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00142 Published 2026-02-18 Partial fix · 5.10.250, 5.15.200 +5 CWE-416
TI-2025-43239 CVE-2025-71089 · GHSA-r6cc-j9rp-4f85

iommu: disable SVA when CONFIG_X86 is set

Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: iommu: disable SVA when CONFIG_X86 is set Patch series "Fix stale IOTLB entries for kernel address space", v7.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00162 Published 2026-01-13 Partial fix · 5.10.273, 5.15.200 +5 CWE-416
TI-2025-41942 CVE-2025-68366 · GHSA-9x47-h3pc-w4pg

nbd: defer config unlock in nbd_genl_connect

Priority LOW 22

In the Linux kernel, the following vulnerability has been resolved: nbd: defer config unlock in nbd_genl_connect There is one use-after-free warning when running NBD_CMD_CONNECT and NBD_CLEAR_SOCK: nbd_genl_connect nbd_a…

CVSS — EPSS 0.00198 Published 2025-12-24 Partial fix · 5.10.248, 5.15.198 +6