CVE-2024-26584
In the Linux kernel, the following vulnerability has been resolved: net: tls: handle backlogging of crypto requests Since we're setting the CRYPTO_TFM_REQ_MAY_BACKLOG flag on our requests to the crypto API, crypto_aead_{encrypt,decrypt} can return…
Does this matter?
Lower severity and a low EPSS score (0.75%). Track it; it rarely justifies an emergency change on its own.
Description
In the Linux kernel, the following vulnerability has been resolved: net: tls: handle backlogging of crypto requests Since we're setting the CRYPTO_TFM_REQ_MAY_BACKLOG flag on our requests to the crypto API, crypto_aead_{encrypt,decrypt} can return -EBUSY instead of -EINPROGRESS in valid situations. For example, when the cryptd queue for AESNI is full (easy to trigger with an artificially low cryptd.cryptd_max_cpu_qlen), requests will be enqueued to the backlog but still processed. In that case, the async callback will also be called twice: first with err == -EINPROGRESS, which it seems we can just ignore, then with err == 0. Compared to Sabrina's original patch this version uses the new tls_*crypt_async_wait() helpers and converts the EBUSY to EINPROGRESS to avoid having to modify all the error handling paths. The handling is identical.
- CVSS 3.1
- 5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 0.75% probability · 53th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-755
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/13eca403876bbea3716e82cdfe6f1e6febb38754Patch
- https://git.kernel.org/stable/c/3ade391adc584f17b5570fd205de3ad029090368
- https://git.kernel.org/stable/c/8590541473188741055d27b955db0777569438e3Patch
- https://git.kernel.org/stable/c/ab6397f072e5097f267abf5cb08a8004e6b17694Patch
- https://git.kernel.org/stable/c/cd1bbca03f3c1d845ce274c0d0a66de8e5929f72Patch
- https://git.kernel.org/stable/c/13eca403876bbea3716e82cdfe6f1e6febb38754Patch
- https://git.kernel.org/stable/c/3ade391adc584f17b5570fd205de3ad029090368
- https://git.kernel.org/stable/c/8590541473188741055d27b955db0777569438e3Patch
- https://git.kernel.org/stable/c/ab6397f072e5097f267abf5cb08a8004e6b17694Patch
- https://git.kernel.org/stable/c/cd1bbca03f3c1d845ce274c0d0a66de8e5929f72Patch
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/EZOU3745CWCDZ7EMKMXB2OEEIB5Q3IWM/
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.