Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected cb69d4d6f709f87c94afa28ae64c501576692171 before f46a70a082bdbfecbe074af8a719c26c4deb58c6; affected 8f0541186e9ad1b62accc9519cc2b7a7240272a7 before 86c2625fb9863139b359805fc6be1e31edbd3d65; affected 8f0541186e9ad1b62accc9519cc2b7a7240272a7 before edc17db83085624a2b1bacf6a4521d7f15571737; affected 8f0541186e9ad1b62accc9519cc2b7a7240272a7 before c3836f55e0dab96314774215e12d87f63fa919f2; affected 8f0541186e9ad1b62accc9519cc2b7a7240272a7 before 6e6329322ad733c5b23555c609353841560b26bc; affected 8f0541186e9ad1b62accc9519cc2b7a7240272a7 before d708a36634bb7b6f94d0e76d587d2ec50b2b93b5; affected 6e8f4abf584253cbaa596ea4ad13110cf61cd4c9; affected 8e33102309bd6839b2e2e158f93a7b378cb4655d; affected 5.15.62 before 5.15.222; affected 5.18.18 before 5.19; affected 5.19.2 before 5.20 |
| Linux / Linux | affected 6.0; unaffected 0 before 6.0; unaffected 5.15.222 through 5.15.*; unaffected 6.1.189 through 6.1.*; unaffected 6.6.158 through 6.6.*; unaffected 6.12.111 through 6.12.*; unaffected 6.18.53 through 6.18.*; unaffected 7.2 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/f46a70a082bdbfecbe074af8a719c26c4deb58c6
- https://git.kernel.org/stable/c/86c2625fb9863139b359805fc6be1e31edbd3d65
- https://git.kernel.org/stable/c/edc17db83085624a2b1bacf6a4521d7f15571737
- https://git.kernel.org/stable/c/c3836f55e0dab96314774215e12d87f63fa919f2
- https://git.kernel.org/stable/c/6e6329322ad733c5b23555c609353841560b26bc
- https://git.kernel.org/stable/c/d708a36634bb7b6f94d0e76d587d2ec50b2b93b5