CVE-2026-64381
smb: client: Fix next buffer leak in receive_encrypted_standard()
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Jul 25, 2026 |
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Affected Versions
Linux / Linux
b24df3e30cbf48255db866720fb71f14bf9d2f39 < 94e4f672db029414b9888b5137a7559f1febf2d8 b24df3e30cbf48255db866720fb71f14bf9d2f39 < 68fc0b6cc03ca58060c0f36454e169f5fe258974 b24df3e30cbf48255db866720fb71f14bf9d2f39 < 07e0ab81df1790afa35732a4e8e07ff831b29008 b24df3e30cbf48255db866720fb71f14bf9d2f39 < 9136a08dc29328edd9867f2545e73906ac9df93b b24df3e30cbf48255db866720fb71f14bf9d2f39 < 67097772df7791c53d608f04bd31c676ccf79b83 b24df3e30cbf48255db866720fb71f14bf9d2f39 < 297243e365fc9fe2f8e9b7dd535a65d922cd108b b24df3e30cbf48255db866720fb71f14bf9d2f39 < 927d4805aea0a287d36dd4f826ee24d69a2afee3 b24df3e30cbf48255db866720fb71f14bf9d2f39 < 1c6267a1d5cf4c73b656f8181b310cbbb3e4767b
Linux / Linux
4.19
References
git.kernel.org: https://git.kernel.org/stable/c/94e4f672db029414b9888b5137a7559f1febf2d8 git.kernel.org: https://git.kernel.org/stable/c/68fc0b6cc03ca58060c0f36454e169f5fe258974 git.kernel.org: https://git.kernel.org/stable/c/07e0ab81df1790afa35732a4e8e07ff831b29008 git.kernel.org: https://git.kernel.org/stable/c/9136a08dc29328edd9867f2545e73906ac9df93b git.kernel.org: https://git.kernel.org/stable/c/67097772df7791c53d608f04bd31c676ccf79b83 git.kernel.org: https://git.kernel.org/stable/c/297243e365fc9fe2f8e9b7dd535a65d922cd108b git.kernel.org: https://git.kernel.org/stable/c/927d4805aea0a287d36dd4f826ee24d69a2afee3 git.kernel.org: https://git.kernel.org/stable/c/1c6267a1d5cf4c73b656f8181b310cbbb3e4767b