CVE-2026-43213

wifi: rtw89: pci: validate sequence number of TX release report

CVE-2026-43213 is fixed in 16 products on 1 platform, first by DEBIAN-CVE-2026-43213, released May 15, 2026. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.5
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0028
20th percentile

In the Linux kernel, the following vulnerability has been resolved: wifi: rtw89: pci: validate sequence number of TX release report Hardware rarely reports abnormal sequence number in TX release report, which will access out-of-bounds of wd_ring->pages array, causing NULL pointer dereference. BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP NOPTI CPU: 1 PID: 1085 Comm: irq/129-rtw89_p Tainted: G S U 6.1.145-17510-g2f3369c91536 #1 (HASH:69e8 1) Call Trace: <IRQ> rtw89_pci_release_tx+0x18f/0x300 [rtw89_pci (HASH:4c83 2)] rtw89_pci_napi_poll+0xc2/0x190 [rtw89_pci (HASH:4c83 2)] net_rx_action+0xfc/0x460 net/core/dev.c:6578 net/core/dev.c:6645 net/core/dev.c:6759 handle_softirqs+0xbe/0x290 kernel/softirq.c:601 ? rtw89_pci_interrupt_threadfn+0xc5/0x350 [rtw89_pci (HASH:4c83 2)] __local_bh_enable_ip+0xeb/0x120 kernel/softirq.c:499 kernel/softirq.c:423 </IRQ> <TASK> rtw89_pci_interrupt_threadfn+0xf8/0x350 [rtw89_pci (HASH:4c83 2)] ? irq_thread+0xa7/0x340 kernel/irq/manage.c:0 irq_thread+0x177/0x340 kernel/irq/manage.c:1205 kernel/irq/manage.c:1314 ? thaw_kernel_threads+0xb0/0xb0 kernel/irq/manage.c:1202 ? irq_forced_thread_fn+0x80/0x80 kernel/irq/manage.c:1220 kthread+0xea/0x110 kernel/kthread.c:376 ? synchronize_irq+0x1a0/0x1a0 kernel/irq/manage.c:1287 ? kthread_associate_blkcg+0x80/0x80 kernel/kthread.c:331 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 </TASK> To prevent crash, validate rpp_info.seq before using.

Where it's fixed

ProductFixed inFixReleased
Linux
dtb-aarch64 · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-64kb · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-64kb · sles 15.7 6.4.0-150700.53.81.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-64kb · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-azure · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-azure · sles 15.7 6.4.0-150700.53.81.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-azure · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-default · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-default · sles 15.7 6.4.0-150700.53.81.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-default · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-default-base · opensuse-leap 16.0 6.12.0-160000.36.1.160000.2.17 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-default-base · sles 15.7 6.4.0-150700.53.81.1.150700.17.45.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-default-base · sles 16.0 6.12.0-160000.36.1.160000.2.17 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-docs · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-docs · sles 15.7 6.4.0-150700.53.81.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-docs · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-kvmsmall · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-kvmsmall · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-livepatch-SLE15-SP7-RT_Update_20 · sles 15.7 1-150700.1.3.1 SUSE-SU-2026:4120-1 Sep 10, 2026
kernel-livepatch-SLE15-SP7_Update_21 · sles 15.7 1-150700.15.3.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-obs-build · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-obs-build · sles 15.7 6.4.0-150700.53.81.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-obs-qa · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-obs-qa · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-rt · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-source · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-source · sles 15.7 6.4.0-150700.53.81.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-source · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-syms · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-syms · sles 15.7 6.4.0-150700.53.81.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-syms · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
kernel-zfcpdump · opensuse-leap 16.0 6.12.0-160000.36.1 OPENSUSE-SU-2026:21388-1 Jul 21, 2026
kernel-zfcpdump · sles 15.7 6.4.0-150700.53.81.1 SUSE-SU-2026:4254-1 Oct 7, 2026
kernel-zfcpdump · sles 16.0 6.12.0-160000.36.1 SUSE-SU-2026:22835-1 Jul 21, 2026
linux · Debian 13.5 (trixie) 6.12.115-2 DEBIAN-CVE-2026-43213 May 15, 2026
linux · Debian 14 6.19.6-1 DEBIAN-CVE-2026-43213 May 15, 2026

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