Red Hat Security AdvisoryRHSA-2026:21557
kernel security update
Released 2026-05-28 · Red Hat rating Important · View on Red Hat →
Fixes 18 records
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 43
In the Linux kernel, the following vulnerability has been resolved: can: j1939: j1939_session_new(): fix skb reference counting Since j1939_session_skb_queue() does an extra skb_get() for each new skb, do the same for th…
CVSS 3.1CRITICAL 9.8· Network · No auth · No interaction · EPSS 0.00681 · Published 2024-12-27 · Partial fix · 5.4.287, 5.10.231 +5
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: 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 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: HID: wacom: fix out-of-bounds read in wacom_intuos_bt_irq The wacom_intuos_bt_irq() function processes Bluetooth HID reports without sufficient bounds c…
CVSS 3.1HIGH 8.1· Adjacent network · No auth · No interaction · EPSS 0.00256 · Published 2026-05-01 · Partial fix · 5.10.253, 5.15.203 +6 CWE-125
Priority LOW 35
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: SCO: fix race conditions in sco_sock_connect() sco_sock_connect() checks sk_state and sk_type without holding the socket lock.
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00097 · Published 2026-05-01 · Fixed in 6.1.168, 6.6.134 +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: ima: don't clear IMA_DIGSIG flag when setting or removing non-IMA xattr Currently when both IMA and EVM are in fix mode, the IMA signature will be reset…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00154 · Published 2025-12-16 · Partial fix · 6.1.191, 6.6.117 +3
Priority LOW 33
In the Linux kernel, the following vulnerability has been resolved: dpaa2-switch: validate num_ifs to prevent out-of-bounds write The driver obtains sw_attr.num_ifs from firmware via dpsw_get_attributes() but never valid…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00139 · Published 2026-05-06 · Fixed in 5.15.202, 6.1.165 +5 CWE-787
Priority LOW 33
In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack_helper: pass helper to expect cleanup nf_conntrack_helper_unregister() calls nf_ct_expect_iterate_destroy() to remove expectatio…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00131 · Published 2026-05-01 · Partial fix · 5.10.253, 5.15.203 +6 CWE-416
Priority LOW 33
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: MGMT: validate LTK enc_size on load Load Long Term Keys stores the user-provided enc_size and later uses it to size fixed-size stack operatio…
CVSS 3.1HIGH 7.8· Local · Low privileges · No interaction · EPSS 0.00129 · Published 2026-05-01 · Partial fix · 5.10.253, 5.15.203 +6 CWE-787
Priority LOW 30
In the Linux kernel, the following vulnerability has been resolved: io_uring/rsrc: reject zero-length fixed buffer import validate_fixed_range() admits buf_addr at the exact end of the registered region when len is zero,…
CVSS 3.1HIGH 7.1· Local · Low privileges · No interaction · EPSS 0.00124 · Published 2026-05-01 · Fixed in 6.18.22, 6.19.12 +1 CWE-125
Priority LOW 24
In the Linux kernel, the following vulnerability has been resolved: net: sched: act_csum: validate nested VLAN headers tcf_csum_act() walks nested VLAN headers directly from skb->data when an skb still carries in-payload…
CVSS 3.1MEDIUM 5.5· Local · Low privileges · No interaction · EPSS 0.00117 · Published 2026-04-25 · Partial fix · 4.20, 5.10.258 +7
Priority LOW 24
In the Linux kernel, the following vulnerability has been resolved: mm: thp: deny THP for files on anonymous inodes file_thp_enabled() incorrectly allows THP for files on anonymous inodes (e.g.
CVSS 3.1MEDIUM 5.5· Local · Low privileges · No interaction · EPSS 0.00123 · Published 2026-03-25 · Fixed in 6.12.78, 6.18.17 +2 CWE-617