Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: mt76: mt7921: fix error code of return in mt7921_acpi_read
Kernel NULL pointer dereference when ACPI SAR table isn't implemented well.
Fix the error code of return to mark the ACPI SAR table as invalid.
[ 5.077128] mt7921e 0000:06:00.0: sar cnt = 0
[ 5.077381] BUG: kernel NULL pointer dereference, address:
0000000000000004
[ 5.077630] #PF: supervisor read access in kernel mode
[ 5.077883] #PF: error_code(0x0000) - not-present page
[ 5.078138] PGD 0 P4D 0
[ 5.078398] Oops: 0000 [#1] PREEMPT SMP NOPTI
[ 5.079202] RIP: 0010:mt7921_init_acpi_sar+0x106/0x220
[mt7921_common]
...
[ 5.080786] Call Trace:
[ 5.080786] <TASK>
[ 5.080786] mt7921_register_device+0x37d/0x490 [mt7921_common]
[ 5.080786] mt7921_pci_probe.part.0+0x2ee/0x310 [mt7921e]
[ 5.080786] mt7921_pci_probe+0x52/0x70 [mt7921e]
[ 5.080786] local_pci_probe+0x47/0x90
[ 5.080786] pci_call_probe+0x55/0x190
[ 5.080786] pci_device_probe+0x84/0x120
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Linux | Linux | 6.0 | 6.1.16 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | linux | 6.1.20-1 | — |
| Debian 13 | linux | 6.1.20-1 | — |
| Debian 12 | linux | 6.1.20-1 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Nvidia-BlueField 22.04 LTS | linux-bluefield | 5.15.0-1015.17 | — |
| Ubuntu 24.04 LTS | linux-riscv +8 | No fix yet | — |
| Ubuntu 22.04 LTS | linux +1 | 5.15.0-70.77 | — |
| Ubuntu 22.04 LTS | linux-aws | 5.15.0-1034.38 | — |
| Ubuntu 22.04 LTS | linux-azure | 5.15.0-1036.43 | — |
| Ubuntu 22.04 LTS | linux-azure-fde | 5.15.0-1036.43.1 | — |
| Ubuntu 22.04 LTS | linux-gcp | 5.15.0-1032.40 | — |
| Ubuntu 22.04 LTS | linux-gke +1 | 5.15.0-1031.36 | — |
| Ubuntu 22.04 LTS | linux-gkeop | 5.15.0-1018.23 | — |
| Ubuntu 22.04 LTS | linux-ibm | 5.15.0-1028.31 | — |
| Ubuntu 22.04 LTS | linux-intel-iotg | 5.15.0-1028.33 | — |
| Ubuntu 22.04 LTS | linux-nvidia | 5.15.0-1023.23 | — |
| Ubuntu 22.04 LTS | linux-oracle | 5.15.0-1033.39 | — |
| Ubuntu 22.04 LTS | linux-raspi | 5.15.0-1027.29 | — |
| Ubuntu 22.04 LTS | linux-riscv +32 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-aws-5.15 | 5.15.0-1034.38~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-azure-5.15 | 5.15.0-1036.43~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gcp-5.15 | 5.15.0-1032.40~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-gke +28 | No fix yet | — |
| Ubuntu 20.04 LTS | linux-hwe-5.15 +1 | 5.15.0-70.77~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-intel-iotg-5.15 | 5.15.0-1030.35~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-nvidia-tegra-5.15 | 5.15.0-1014.14~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-oracle-5.15 | 5.15.0-1033.39~20.04.1 | — |
| Ubuntu 20.04 LTS | linux-riscv-5.15 | 5.15.0-1031.35~20.04.1 | — |
| Ubuntu 18.04 LTS | linux-gcp +14 | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | linux-hwe-edge | No fix yet | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-intel-iot-realtime | 5.15.0-1024.29 | — |
| Ubuntu Pro Realtime 22.04 LTS | linux-realtime | 5.15.0-1036.39 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 9 | bpftool | 7.2.0-362.8.1.el9_3 | RHSA-2023:6583 |
| RHEL 9 | rv +64 | 5.14.0-362.8.1.el9_3 | RHSA-2023:6583 |
| RHEL 8 | perf +26 | 4.18.0-513.5.1.el8_9 | RHSA-2023:7077 |
Advisories 3
- WID-SEC-2025-2394 Linux Kernel: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 9, 2026
- RHSA-2023:7077 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026
- RHSA-2023:6583 Red Hat Security Advisory: kernel security, bug fix, and enhancement update Red Hat Security Advisories (RHSA) · Oct 17, 2026