Description
In the Linux kernel, the following vulnerability has been resolved: X.509: Fix out-of-bounds access when parsing extensions Leo reports an out-of-bounds access when parsing a certificate with empty Basic Constraints or Key Usage extension because the first byte of the extension is read before checking its length. Fix it. The bug can be triggered by an unprivileged user by submitting a specially crafted certificate to the kernel through the keyrings(7) API. Leo has demonstrated this with a proof-of-concept program responsibly disclosed off-list.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
30eae2b037af54b24109dcaea21db46f6285c69b to < 672b526def1f94c1be8eb11b885b803da0d8c2f1affected30eae2b037af54b24109dcaea21db46f6285c69b to < 30ab358fad0c7daa1d282ec48089901b21b36a20affected30eae2b037af54b24109dcaea21db46f6285c69b to < 206121294b9cf27f0589857f80d64f87e496ffb2affected30eae2b037af54b24109dcaea21db46f6285c69b to < 7fb4dadc2734f4020d7543d688b8d49c8e569c61affected30eae2b037af54b24109dcaea21db46f6285c69b to < d702c3408213bb12bd570bb97204d8340d141c51affected
Linux Linux
Default version status: affected
6.4affected0 to < 6.4unaffected6.6.135 to ≤ 6.6.*unaffected6.12.82 to ≤ 6.12.*unaffected6.18.23 to ≤ 6.18.*unaffected6.19.13 to ≤ 6.19.*unaffected7.0 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/672b526def1f94c1be8eb11b885b803da0d8c2f1 ↗
- https://git.kernel.org/stable/c/30ab358fad0c7daa1d282ec48089901b21b36a20 ↗
- https://git.kernel.org/stable/c/206121294b9cf27f0589857f80d64f87e496ffb2 ↗
- https://git.kernel.org/stable/c/7fb4dadc2734f4020d7543d688b8d49c8e569c61 ↗
- https://git.kernel.org/stable/c/d702c3408213bb12bd570bb97204d8340d141c51 ↗