CVE-2024-26800 (GCVE-0-2024-26800)

Vulnerability from cvelistv5 – Published: 2024-04-04 08:20 – Updated: 2025-05-04 12:54
VLAI?
Title
tls: fix use-after-free on failed backlog decryption
Summary
In the Linux kernel, the following vulnerability has been resolved: tls: fix use-after-free on failed backlog decryption When the decrypt request goes to the backlog and crypto_aead_decrypt returns -EBUSY, tls_do_decryption will wait until all async decryptions have completed. If one of them fails, tls_do_decryption will return -EBADMSG and tls_decrypt_sg jumps to the error path, releasing all the pages. But the pages have been passed to the async callback, and have already been released by tls_decrypt_done. The only true async case is when crypto_aead_decrypt returns -EINPROGRESS. With -EBUSY, we already waited so we can tell tls_sw_recvmsg that the data is available for immediate copy, but we need to notify tls_decrypt_sg (via the new ->async_done flag) that the memory has already been released.
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: cd1bbca03f3c1d845ce274c0d0a66de8e5929f72 , < f2b85a4cc763841843de693bbd7308fe9a2c4c89 (git)
Affected: 13eca403876bbea3716e82cdfe6f1e6febb38754 , < 81be85353b0f5a7b660635634b655329b429eefe (git)
Affected: ab6397f072e5097f267abf5cb08a8004e6b17694 , < 1ac9fb84bc7ecd4bc6428118301d9d864d2a58d1 (git)
Affected: 8590541473188741055d27b955db0777569438e3 , < 13114dc5543069f7b97991e3b79937b6da05f5b0 (git)
Affected: 3ade391adc584f17b5570fd205de3ad029090368 (git)
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    Linux Linux Affected: 6.6.18 , < 6.6.21 (semver)
Affected: 6.7.6 , < 6.7.9 (semver)
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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