CVE-2026-64381In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix next buffer leak in receive_encrypted_standard() receive_encrypted_standard() allocates next_buffer before checkin…
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In the Linux kernel, the following vulnerability has been resolved: smb: client: Fix next buffer leak in receive_encrypted_standard() receive_encrypted_standard() allocates next_buffer before checking whether the number of compound PDUs already reached MAX_COMPOUND. If the limit check fails, the function returns immediately and the newly allocated next_buffer is not assigned to server->smallbuf/server->bigbuf, making it leaked. Move the MAX_COMPOUND check before allocating next_buffer.
- CVSS
- 7.8 HIGH (v3.1, NVD)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- CWE-787
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Sep 8, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
linux linux_kernel linux:linux_kernel | from 4.19 before 5.10.261; from 5.11 before 5.15.212; from 5.16 before 6.1.178; from 6.2 before 6.6.145; from 6.7 before 6.12.96; from 6.13 before 6.18.39; from 6.19 before 7.1.4 | NVD |
References
- https://git.kernel.org/stable/c/07e0ab81df1790afa35732a4e8e07ff831b29008patch
- https://git.kernel.org/stable/c/1c6267a1d5cf4c73b656f8181b310cbbb3e4767bpatch
- https://git.kernel.org/stable/c/297243e365fc9fe2f8e9b7dd535a65d922cd108bpatch
- https://git.kernel.org/stable/c/67097772df7791c53d608f04bd31c676ccf79b83patch
- https://git.kernel.org/stable/c/68fc0b6cc03ca58060c0f36454e169f5fe258974patch
- https://git.kernel.org/stable/c/9136a08dc29328edd9867f2545e73906ac9df93bpatch
- https://git.kernel.org/stable/c/927d4805aea0a287d36dd4f826ee24d69a2afee3patch
- https://git.kernel.org/stable/c/94e4f672db029414b9888b5137a7559f1febf2d8patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.