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Red Hat Security Advisory

RHSA-2026:75747

kernel security, bug fix, and enhancement update

Released 2026-10-05 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 29 records

Priority MEDIUM 50

In the Linux kernel, the following vulnerability has been resolved: netfilter: flowtable: publish GC-visible tuple last nf_flow_table_iterate() only treats original-direction tuple nodes as owning entries.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00536 Published 2026-08-26 Partial fix · 5.10.266, 5.15.217 +6
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: ipvlan: inherit needed_headroom and needed_tailroom from phy_dev ipvlan devices inherit hard_header_len from phy_dev during ipvlan_init(), but leave nee…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00512 Published 2026-08-26 Partial fix · 6.1.184, 6.6.153 +4
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: ipvs: clear IPv4 options after rebasing tunnel ICMP errors ip_vs_in_icmp() rebases an skb from the outer ICMP packet to the quoted original request befo…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00514 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: netfilter: nf_conntrack_sip: widen NAT rewrite delta to s32 in sip_help_tcp() sip_help_tcp() stores the size change of each NAT-rewritten SIP message in…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00388 Published 2026-08-15 Partial fix · 5.10.265, 5.15.216 +6
Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: tunnels: load network headers after skb_cow() in iptunnel_pmtud_build_icmp[v6]() Sashiko found that iptunnel_pmtud_build_icmp() and iptunnel_pmtud_build…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00514 Published 2026-07-19 Partial fix · 5.10.259, 5.15.210 +6 CWE-416
TI-2026-38136 CVE-2026-53049 · GHSA-7q4j-gqp5-6p93

gfs2: add some missing log locking

Priority MEDIUM 49

In the Linux kernel, the following vulnerability has been resolved: gfs2: add some missing log locking Function gfs2_logd() calls the log flushing functions gfs2_ail1_start(), gfs2_ail1_wait(), and gfs2_ail1_empty() with…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00388 Published 2026-06-24 Partial fix · 5.15.209, 6.1.175 +5 CWE-362
Priority MEDIUM 46

In the Linux kernel, the following vulnerability has been resolved: tunnels: do not assume transport header in iptunnel_pmtud_check_icmp() In some cases, iptunnel_pmtud_check_icmp() can be called while skb transport head…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00514 Published 2026-07-19 Partial fix · 5.10.259, 5.15.210 +6 CWE-125
Priority MEDIUM 43

In the Linux kernel, the following vulnerability has been resolved: nvme: add missing SRCU grace period in error path nvme_alloc_ns() error path at out_unlink_ns removes ns from the namespace head siblings list with list…

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00714 Published 2026-09-16 Partial fix · 5.10.273, 5.15.224 +6
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: nvme-tcp: fix host memory disclosure on R2T for a read command nvme_tcp_handle_r2t() does not check the direction of the request the R2T refers to.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00432 Published 2026-09-11 Partial fix · 5.10.273, 5.15.224 +6
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: net: ip6_gre: require CAP_NET_ADMIN in the device netns for changelink ip6gre_changelink() and ip6erspan_changelink() operate on at most two netns, dev_…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00151 Published 2026-08-15 Partial fix · 4.20, 5.5 +8 CWE-862
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: vxlan: require CAP_NET_ADMIN in the device netns for changelink A tunnel changelink() operates on at most two netns, dev_net(dev) and the sticky underla…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00146 Published 2026-08-12 Partial fix · 5.10.265, 5.15.216 +6 CWE-863
Priority LOW 39

In the Linux kernel, the following vulnerability has been resolved: net: ip_gre: require CAP_NET_ADMIN in the device netns for changelink A tunnel changelink() operates on at most two netns, dev_net(dev) and the tunnel l…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00148 Published 2026-07-19 Partial fix · 5.10.261, 5.15.212 +6 CWE-862
TI-2026-55934 CVE-2026-80921 · GHSA-337q-m32v-p95j

KVM: s390: vsie: zero stale crypto bits

Priority LOW 37

In the Linux kernel, the following vulnerability has been resolved: KVM: s390: vsie: zero stale crypto bits When shadowing crypto access bits from a format0 apcb (crycb 0 or 1), the bits 64..255 are unchanged from whatev…

CVSS 3.1HIGH 8.8 Local Low privileges No interaction EPSS 0.00126 Published 2026-09-09 Partial fix · 5.10.269, 5.15.220 +7
Priority LOW 37

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Update x2APIC MSR intercepts if AVIC is inhibited while L2 is active Always update x2APIC MSR intercepts for L1 when AVIC is deactivated, even…

CVSS 3.1HIGH 8.2 Local High privileges No interaction EPSS 0.00135 Published 2026-08-15 Partial fix · 6.1.183, 6.6.151 +4
Priority LOW 37

In the Linux kernel, the following vulnerability has been resolved: net/mlx5: Fix slab-out-of-bounds in mlx5_query_nic_vport_mac_list mlx5_query_nic_vport_mac_list() sizes its firmware command buffer using the PF's log_m…

CVSS 3.1HIGH 8.7 Local Low privileges No interaction EPSS 0.00126 Published 2026-06-25 Partial fix · 6.1.191, 6.6.143 +4 CWE-787
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_queue: pin bridge device while NFQUEUE holds fake dst The br_netfilter fake rtable is embedded in struct net_bridge and is attached to bri…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00176 Published 2026-08-15 Partial fix · 5.10.270, 5.15.217 +6
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: ipvs: clear the svc scheduler ptr early on edit ip_vs_edit_service() while unbinding the old scheduler clears the svc->scheduler ptr after the scheduler…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00157 Published 2026-06-25 Partial fix · 3.19, 4.2 +8 CWE-416
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: net/sched: act_ct: Only release RCU read lock after ct_ft When looking up a flow table in act_ct in tcf_ct_flow_table_get(), rhashtable_lookup_fast() in…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00105 Published 2026-06-09 Partial fix · 5.10.258, 5.15.209 +6 CWE-362
TI-2026-33586 CVE-2026-45861 · GHSA-v5c4-8mx9-g6x5

gfs2: Fix slab-use-after-free in qd_put

Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix slab-use-after-free in qd_put Commit a475c5dd16e5 ("gfs2: Free quota data objects synchronously") started freeing quota data objects during fi…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00186 Published 2026-05-27 Partial fix · 6.6.160, 6.12.75 +3 CWE-416
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag This is more of a preventive patch to make the code more consist…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00145 Published 2026-02-04 Partial fix · 5.10.249, 5.15.199 +5 CWE-20
Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: RDMA/bnxt_re: Prevent handling any completions after qp destroy HW may generate completions that indicates QP is destroyed.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00201 Published 2025-12-24 Partial fix · 5.15.124, 6.1.43 +2
TI-2022-26213 CVE-2022-50756 · GHSA-j2wx-wqf4-px3j

nvme-pci: fix mempool alloc size

Priority LOW 35

In the Linux kernel, the following vulnerability has been resolved: nvme-pci: fix mempool alloc size Convert the max size to bytes to match the units of the divisor that calculates the worst-case number of PRP entries.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00201 Published 2025-12-24 Partial fix · 5.10.163, 5.15.87 +3
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: netfilter: nf_conntrack: use get_unaligned_be32() in tcp_sack() The timestamp-only fast path dereferences the option stream as *(__be32 *)ptr, which ass…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.0049 Published 2026-09-24 Partial fix · 5.10.271, 5.15.222 +5
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: nvme/ioctl: check SUBMIT_IO with nvme_cmd_allowed() Unlike IO_CMD / IO64_CMD, NVME_IOCTL_SUBMIT_IO never calls nvme_cmd_allowed().

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00168 Published 2026-09-17 Partial fix · 6.6.157, 6.12.110 +3
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: KVM: SVM: Fix page overflow in sev_dbg_crypt() for ENCRYPT path In sev_dbg_crypt(), the per-iteration transfer length is bounded by the source page offs…

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00142 Published 2026-07-19 Partial fix · 5.10.260, 5.15.211 +6 CWE-787
Priority LOW 33

In the Linux kernel, the following vulnerability has been resolved: media: tuner: xc5000: Fix use-after-free in xc5000_release The original code uses cancel_delayed_work() in xc5000_release(), which does not guarantee th…

CVSS 3.1HIGH 7.3 Local Low privileges User interaction EPSS 0.00159 Published 2025-10-15 Fixed in 5.4.301, 5.10.246 +7
TI-2025-26912 CVE-2025-40242 · GHSA-4g8j-hwjq-h8fr

gfs2: Fix unlikely race in gdlm_put_lock

Priority LOW 32

In the Linux kernel, the following vulnerability has been resolved: gfs2: Fix unlikely race in gdlm_put_lock In gdlm_put_lock(), there is a small window of time in which the DFL_UNMOUNT flag has been set but the lockspac…

CVSS 3.1HIGH 7.0 Local Low privileges No interaction EPSS 0.00156 Published 2025-12-04 Partial fix · 4.5, 4.10 +11
Priority LOW 30

In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Validate wqe_size before using it in ib_uverbs_post_send ib_uverbs_post_send() uses cmd.wqe_size from userspace without any validation befo…

CVSS 3.1HIGH 7.1 Local Low privileges No interaction EPSS 0.00187 Published 2026-05-27 Partial fix · 5.10.252, 5.15.202 +6 CWE-125
Priority LOW 24

In the Linux kernel, the following vulnerability has been resolved: crypto: af_alg - Cap AEAD AD length to 0x80000000 In order to prevent arithmetic overflows when checking the TX buffer size, cap the associated data len…

CVSS 3.1MEDIUM 5.5 Local Low privileges No interaction EPSS 0.00144 Published 2026-06-24 Partial fix · 5.10.258, 5.15.209 +7