CVE-2026-31779 json
wifi: iwlwifi: mvm: fix potential out-of-bounds read in iwl_mvm_nd_match_info_handler()
published 2026-05-01 6 mo ago modified 2026-10-19 20 d ago also EUVD-2026-26592
- cvss
- 8.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 19%
- public exploits
- 0
- none known
Summary
In the Linux kernel, the following vulnerability has been resolved:
wifi: iwlwifi: mvm: fix potential out-of-bounds read in iwl_mvm_nd_match_info_handler()
The memcpy function assumes the dynamic array notif->matches is at least as large as the number of bytes to copy. Otherwise, results->matches may contain unwanted data. To guarantee safety, extend the validation in one of the checks to ensure sufficient packet length.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Patch / fix
- Linux Linux 6.1.168, 6.6.134, 6.12.81, 6.18.22, 6.19.12, 7.0
- linux Debian 12 6.1.170-1
- linux Debian 13 6.12.85-1
- linux Debian 14 6.19.12-1
debian advisories DEBIAN-CVE-2026-31779
- linux Ubuntu 24.04 LTS 6.8.0-136.136
- linux-aws Ubuntu 24.04 LTS 6.8.0-1061.64
- linux-gcp Ubuntu 24.04 LTS 6.8.0-1064.72
- linux-gke Ubuntu 24.04 LTS 6.8.0-1059.67
- linux-ibm Ubuntu 24.04 LTS 6.8.0-1061.62
- linux-azure Ubuntu 24.04 LTS 6.8.0-1063.71
- linux-gkeop Ubuntu 24.04 LTS 6.8.0-1046.50
- linux-raspi Ubuntu 24.04 LTS 6.8.0-1061.65
ubuntu advisories UBUNTU-CVE-2026-31779
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
- kernel-source Linux Micro 6.1, Linux Micro 6.0 6.4.0-51.1
- kernel-default Linux Micro 6.1, Linux Micro 6.0 6.4.0-51.1
- kernel-kvmsmall Linux Micro 6.1, Linux Micro 6.0 6.4.0-51.1
- kernel-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-51.1
- kernel-source-rt Linux Micro 6.1, Linux Micro 6.0 6.4.0-51.1
- kernel-default SLES 16.0, SLE High Availability Extension 16.0, Linux Micro 6.2 +1 more 6.12.0-160000.37.1
- kernel-rt Linux Micro 6.2 6.12.0-160000.37.1
- kernel-64kb SLES 16.0, Linux Micro 6.2, SLES for SAP applications 16.0 6.12.0-160000.37.1
suse advisories SUSE-SU-2026:23244-1SUSE-SU-2026:23241-1SUSE-SU-2026:23194-1SUSE-SU-2026:23193-1SUSE-SU-2026:23237-1SUSE-SU-2026:23068-1
- kernel-rt openSUSE Leap 16.0 6.12.0-160000.37.1
- dtb-aarch64 openSUSE Leap 16.0 6.12.0-160000.37.1
- kernel-64kb openSUSE Leap 16.0 6.12.0-160000.37.1
- kernel-syms openSUSE Leap 16.0 6.12.0-160000.37.1
- kernel-azure openSUSE Leap 16.0 6.12.0-160000.37.1
- kernel-obs-qa openSUSE Leap 16.0 6.12.0-160000.37.1
- kernel-source openSUSE Leap 16.0 6.12.0-160000.37.1
- kernel-default openSUSE Leap 16.0 6.12.0-160000.37.1
opensuse advisories openSUSE-SU-2026:21555-1
- git.kernel.org/stable/c/f6abac936a0dfd31d6c3e49205ec0ee75a8f887f commit
- git.kernel.org/stable/c/ffbed27ba15ef80d1c622eeedbfef03e501ae134 commit
- git.kernel.org/stable/c/e67d8c626ace80b0fa2b48c8ec0a46b508c93442 commit
- git.kernel.org/stable/c/dd90880eb5ec5442b37eb2b95688f4a63f4883e3 commit
- git.kernel.org/stable/c/ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2 commit
- git.kernel.org/stable/c/744fabc338e87b95c4d1ff7c95bc8c0f834c6d99 commit
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2026-31779 updated cvss 5.5
kernel: wifi: iwlwifi: mvm: fix potential out-of-bounds read in iwl_mvm_nd_match_info_handler()
-
Red Hat Enterprise Linux 8 perf, kernel, bpftool, kernel-rt, kernel-core, kernel-tools, +29 more Red Hat Enterprise Linux 9 rv, perf, rtla, kernel, bpftool, libperf, +83 more Red Hat Enterprise Linux 10 kernelaffected: no fix available “Fix deferred”
-
Red Hat Enterprise Linux 6 perf, kernel, python-perf, kernel-kdump, kernel-firmware, kernel-bootwrapper, +1 more Red Hat Enterprise Linux 7 perf, kernel, bpftool, kernel-rt, python-perf, kernel-kdump, +8 morenot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 23 d ago
Exploit prediction
0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 8.1 | CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
Affected products
- Linux Linux
Classification
- Weakness
-
- CWE-125 Out-of-bounds Read
- Technology feeds
References
-
git.kernel.org
/stable/c/f6abac936a0dfd31d6c3e49205ec0ee75a8f887f
patch
-
git.kernel.org
/stable/c/ffbed27ba15ef80d1c622eeedbfef03e501ae134
patch
-
git.kernel.org
/stable/c/e67d8c626ace80b0fa2b48c8ec0a46b508c93442
patch
-
git.kernel.org
/stable/c/dd90880eb5ec5442b37eb2b95688f4a63f4883e3
patch
-
git.kernel.org
/stable/c/ca0e9491b98ca4c5b44204b0b3dd8062a3b5fba2
patch
-
git.kernel.org
/stable/c/744fabc338e87b95c4d1ff7c95bc8c0f834c6d99
patch
Sources
- CVE List CVE-2026-31779
- NVD CVE-2026-31779
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