🔐 CVE Alert

CVE-2026-93811

UNKNOWN 0.0

ksmbd: Fix acl.sd_buf memory leak and invalid sd_size error handling

CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th

In the Linux kernel, the following vulnerability has been resolved: ksmbd: Fix acl.sd_buf memory leak and invalid sd_size error handling 1. When ndr_decode_v4_ntacl() fails, the code jumped to free_n_data which only freed n.data, skipping kfree(acl.sd_buf) and leaking the buffer. Zero-initialize struct xattr_ntacl acl, reorder error labels to out_free to release acl.sd_buf on all error paths. 2. if (acl.sd_size < sizeof(struct smb_ntsd)) is true, original code returned success without freeing sd_buf and left stale *pntsd. Set rc = -EINVAL before jumping to out_free to return error code and free buffer.

Vendor linux
Product linux
Ecosystems
Industries
Technology
Published Sep 24, 2026
Last Updated Oct 3, 2026
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Affected Versions

Linux / Linux
cb69d4d6f709f87c94afa28ae64c501576692171 < f46a70a082bdbfecbe074af8a719c26c4deb58c6 8f0541186e9ad1b62accc9519cc2b7a7240272a7 < 86c2625fb9863139b359805fc6be1e31edbd3d65 8f0541186e9ad1b62accc9519cc2b7a7240272a7 < edc17db83085624a2b1bacf6a4521d7f15571737 8f0541186e9ad1b62accc9519cc2b7a7240272a7 < c3836f55e0dab96314774215e12d87f63fa919f2 8f0541186e9ad1b62accc9519cc2b7a7240272a7 < 6e6329322ad733c5b23555c609353841560b26bc 8f0541186e9ad1b62accc9519cc2b7a7240272a7 < d708a36634bb7b6f94d0e76d587d2ec50b2b93b5 6e8f4abf584253cbaa596ea4ad13110cf61cd4c9 8e33102309bd6839b2e2e158f93a7b378cb4655d 5.15.62 < 5.15.222 5.18.18 < 5.19 5.19.2 < 5.20
Linux / Linux
6.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗
git.kernel.org: https://git.kernel.org/stable/c/f46a70a082bdbfecbe074af8a719c26c4deb58c6 git.kernel.org: https://git.kernel.org/stable/c/86c2625fb9863139b359805fc6be1e31edbd3d65 git.kernel.org: https://git.kernel.org/stable/c/edc17db83085624a2b1bacf6a4521d7f15571737 git.kernel.org: https://git.kernel.org/stable/c/c3836f55e0dab96314774215e12d87f63fa919f2 git.kernel.org: https://git.kernel.org/stable/c/6e6329322ad733c5b23555c609353841560b26bc git.kernel.org: https://git.kernel.org/stable/c/d708a36634bb7b6f94d0e76d587d2ec50b2b93b5