CVE-2026-93811

CVE CVE-2026-93811EUVD EUVD-2026-86198Published 2026-09-24T16:02:47.000ZLast changed 2026-09-25T12:43:19.000Z

What the advisory describes

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.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux patch: 6.12.111; cb69d4d6f709f87c94afa28ae64c501576692171; 5.15.62 <5.16; 6e8f4abf584253cbaa596ea4ad13110cf61cd4c9; 8f0541186e9ad1b62accc9519cc2b7a7240272a7 <c3836f55e0dab96314774215e12d87f63fa919f2; 8e33102309bd6839b2e2e158f93a7b378cb4655d; 5.19.2 <5.20; patch: 0; 5.18.18 <5.19; patch: 6.18.53; patch: 7.2; 6.0; 8f0541186e9ad1b62accc9519cc2b7a7240272a7 <6e6329322ad733c5b23555c609353841560b26bc; 8f0541186e9ad1b62accc9519cc2b7a7240272a7 <d708a36634bb7b6f94d0e76d587d2ec50b2b93b5

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

An estate covering these products can be recorded in Patchlage. An advisory about them appears in the next morning's situation report.

Linux — Linux

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