CVE-2025-22038
In the Linux kernel, the following vulnerability has been resolved: ksmbd: validate zero num_subauth before sub_auth is accessed Access psid->sub_auth[psid->num_subauth - 1] without checking if num_subauth is non-zero leads to an out-of-bounds read.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.58%). 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: validate zero num_subauth before sub_auth is accessed Access psid->sub_auth[psid->num_subauth - 1] without checking if num_subauth is non-zero leads to an out-of-bounds read. This patch adds a validation step to ensure num_subauth != 0 before sub_auth is accessed.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.58% probability · 46th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/0e36a3e080d6d8bd7a34e089345d043da4ac8283Patch
- https://git.kernel.org/stable/c/3ac65de111c686c95316ade660f8ba7aea3cd3ccPatch
- https://git.kernel.org/stable/c/56de7778a48560278c334077ace7b9ac4bfb2fd1Patch
- https://git.kernel.org/stable/c/68c6c3142bfcdb049839d40a9a59ebe8ea865002Patch
- https://git.kernel.org/stable/c/bf21e29d78cd2c2371023953d9c82dfef82ebb36Patch
- https://git.kernel.org/stable/c/c8bfe1954a0b89e7b29b3a3e7f4c5e0ebd295e20Patch
- https://lists.debian.org/debian-lts-announce/2025/05/msg00045.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.