CVE-2026-45972
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.33%). 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: smb: client: fix potential UAF and double free in smb2_open_file() Zero out @err_iov and @err_buftype before retrying SMB2_open() to prevent an UAF bug if @data != NULL, otherwise a double free.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.33% probability · 26th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416, CWE-825
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/4d339b219004869e96c4ce56b8891f83a38da4c0Patch
- https://git.kernel.org/stable/c/639deb962986ef2f5e2a6d5a600c66f922471e81Patch
- https://git.kernel.org/stable/c/7425453ea16dbc3bbb0f6cac4d60b537e5e4d151Patch
- https://git.kernel.org/stable/c/96e53bb3ee2f354cf6b4ab07bcc56e500f8b3f74Patch
- https://git.kernel.org/stable/c/e66dcf7bb9c4df5582c82bc3582725abcbfbea73Patch
- https://git.kernel.org/stable/c/ebbbc4bfad4cb355d17c671223d0814ee3ef4edaPatch
- https://access.redhat.com/security/cve/CVE-2026-45972
- https://bugzilla.redhat.com/show_bug.cgi?id=2481973
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-45972.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.