High severity · published May 28, 2026
CVE-2026-46163
wifi: b43legacy: enforce bounds check on firmware key index in RX path
7.8
CVSS
0.1%
EPSS
No
On KEV
Description
In the Linux kernel, the following vulnerability has been resolved:
wifi: b43legacy: enforce bounds check on firmware key index in RX path
Same fix as b43: the firmware-controlled key index in b43legacy_rx()
can exceed dev->max_nr_keys. The existing B43legacy_WARN_ON is
non-enforcing in production builds, allowing an out-of-bounds read of
dev->key[].
Make the check enforcing by dropping the frame for invalid indices.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 3% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
KE
Kernel · Linux
2.6.24 before 5.10.258; 5.11 before 5.15.209; 5.16 before 6.1.175; 6.2 before 6.6.140; 6.7 before 6.12.88; 6.13 before 6.18.30; +3 more · source: NVD
LI
Linux · Linux
75388acd0cd827dc1498043daa7d1c760902cd67 before a92bd0503df2488f2cc040f329ebccff1c1934cb; 75388acd0cd827dc1498043daa7d1c760902cd67 before df805c1d085b7a96077f0964185764c87060950d; 75388acd0cd827dc1498043daa7d1c760902cd67 before 4242db36de99de734cc1f60e5edd86cda7e598c6; 75388acd0cd827dc1498043daa7d1c760902cd67 before 1baaeb6adecb9691748c0253dab6ddd19a2b4e9e; 75388acd0cd827dc1498043daa7d1c760902cd67 before 6ee946077607d7783ae6709a899213fc4fe08f35; 75388acd0cd827dc1498043daa7d1c760902cd67 before 9d1bc155802943e92c57a5fb923d23edfbf0b525; +3 more · source: vendor
SS
SIMATIC S7-1500 TM MFP - GNU/Linux subsystem · Siemens
0 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-46163
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-46163
Patch
https://git.kernel.org/stable/c/1baaeb6adecb9691748c0253dab6ddd19a2b4e9e
Patch
https://git.kernel.org/stable/c/4242db36de99de734cc1f60e5edd86cda7e598c6
Patch
https://git.kernel.org/stable/c/6ee946077607d7783ae6709a899213fc4fe08f35
Patch
https://git.kernel.org/stable/c/9d1bc155802943e92c57a5fb923d23edfbf0b525
Patch
https://git.kernel.org/stable/c/a035766f970bde2d4298346a31a80685be5c0205
Patch
https://git.kernel.org/stable/c/a92bd0503df2488f2cc040f329ebccff1c1934cb
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