Answer in brief
CVE-2026-98405 records a High severity (CVSS 8.1) vulnerability in smb: client: fix missing iov bounds check in parse_posix_sids(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic), Linux/Linux (generic) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=a90f37e3d7acfd9824f162830583bbf7846fe252 <d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644 || >=a90f37e3d7acfd9824f162830583bbf7846fe252 <b862996e5105be1293da9cdc85da77b76021c3bd || >=a90f37e3d7acfd9824f162830583bbf7846fe252 <2f8ed71aaaba3bc8b19cd9930cc62e63e142b299 || >=a90f37e3d7acfd9824f162830583bbf7846fe252 <eac6917a42899aad0617bbf04798c5dd946a1fe5 || >=a90f37e3d7acfd9824f162830583bbf7846fe252 <b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc | d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644, b862996e5105be1293da9cdc85da77b76021c3bd, 2f8ed71aaaba3bc8b19cd9930cc62e63e142b299, eac6917a42899aad0617bbf04798c5dd946a1fe5, b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc |
| Linux/Linuxgeneric | >=6.6.32 <6.6.158 || >=6.6.32 <6.12.112 || >=6.6.32 <6.18.54 || >=6.6.32 <7.2.8 || >=6.6.32 <7.3-rc4 | 6.6.158, 6.12.112, 6.18.54, 7.2.8, 7.3-rc4 |
| Linux/Linuxgeneric | >=6.6.32 <6.6.158 || >=6.6.32 <6.12.112 || >=6.6.32 <6.18.54 || >=6.6.32 <7.2.8 || >=6.6.32 <7.3 | 6.6.158, 6.12.112, 6.18.54, 7.2.8, 7.3 |
| Linux/Linuxgeneric | >=a90f37e3d7acfd9824f162830583bbf7846fe252 <d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644 || >=858e74876c5cbff1dfd5bace99e32fbce2abd4b5 <b862996e5105be1293da9cdc85da77b76021c3bd || >=858e74876c5cbff1dfd5bace99e32fbce2abd4b5 <2f8ed71aaaba3bc8b19cd9930cc62e63e142b299 || >=858e74876c5cbff1dfd5bace99e32fbce2abd4b5 <eac6917a42899aad0617bbf04798c5dd946a1fe5 || >=858e74876c5cbff1dfd5bace99e32fbce2abd4b5 <b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc || >=6.6.32 <6.6.158 | d91b9a3b2b38e5ac1b51e9e5b23fe53ad7b49644, b862996e5105be1293da9cdc85da77b76021c3bd, 2f8ed71aaaba3bc8b19cd9930cc62e63e142b299, eac6917a42899aad0617bbf04798c5dd946a1fe5, b09d092eb24ad0110f16a9b7c1ed5d2a0c1733dc, 6.6.158 |
| Linux/Linuxgeneric | 6.8 | Not reported |
Published upstream
Oct 14, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 24, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 14, 2026
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.
Quoted source text, attributed separately from HOL analysis.