Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: smb: client: fix missing iov bounds check in parse_posix_sids() In parse_posix_sids(), sidsbuf_end is calculated using the server-supplied out_len without being validated against the actual length of the received iov (iov_len). If a server provides an inflated out_len, sidsbuf_end will point past the end of the iov. This defeats the bounds guards in posix_info_sid_size(), allowing out-of-bounds reads into adjacent kernel memory. Fix this by rejecting responses where the calculated sidsbuf_end would exceed the received iov boundaries or cause pointer wraparound.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected a90f37e3d7acfd9824f162830583bbf7846fe252 before d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644; affected 858e74876c5cbff1dfd5bace99e32fbce2abd4b5 before b862996e5105be1293da9cdc85da77b76021c3bd; affected 858e74876c5cbff1dfd5bace99e32fbce2abd4b5 before 2f8ed71aaaba3bc8b19cd9930cc62e63e142b299; affected 858e74876c5cbff1dfd5bace99e32fbce2abd4b5 before eac6917a42899aad0617bbf04798c5dd946a1fe5; affected 858e74876c5cbff1dfd5bace99e32fbce2abd4b5 before b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc; affected 6.6.32 before 6.6.158 |
| Linux / Linux | affected 6.8; unaffected 0 before 6.8; unaffected 6.6.158 through 6.6.*; unaffected 6.12.112 through 6.12.*; unaffected 6.18.54 through 6.18.*; unaffected 7.2.8 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644
- https://git.kernel.org/stable/c/b862996e5105be1293da9cdc85da77b76021c3bd
- https://git.kernel.org/stable/c/2f8ed71aaaba3bc8b19cd9930cc62e63e142b299
- https://git.kernel.org/stable/c/eac6917a42899aad0617bbf04798c5dd946a1fe5
- https://git.kernel.org/stable/c/b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc