VulnerabilityModified
CVE-2026-23364
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Compare MACs in constant time To prevent timing attacks, MAC comparisons need to be constant-time.
HIGH 7.4EPSS 0.39%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.39%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: ksmbd: Compare MACs in constant time To prevent timing attacks, MAC comparisons need to be constant-time. Replace the memcmp() with the correct function, crypto_memneq().
- CVSS 3.1
- 7.4 HIGHCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 0.39% probability · 33th percentile
- CISA KEV
- Not listed
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2cdc56ed67615ba0921383a688f24415ebe065f3Patch
- https://git.kernel.org/stable/c/307afccb751f542246bd5dc68a2c1ffe1a78418cPatch
- https://git.kernel.org/stable/c/8a665d733940592e671ec6afadcd0be80a091a80
- https://git.kernel.org/stable/c/93c0a22fec914ec4b697e464895a0f594e29fb28Patch
- https://git.kernel.org/stable/c/c5794709bc9105935dbedef8b9cf9c06f2b559faPatch
- https://git.kernel.org/stable/c/cd52a0e309659537048a864211abc3ea4c5caa63Patch
- https://git.kernel.org/stable/c/f4588b85efd6007d46b80aa1b9fb746628ffb3dcPatch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.