Answer in brief
CVE-2026-46155 records a Critical severity (CVSS 9.1) vulnerability in smb/client: fix out-of-bounds read in smb2_compound_op(). The current sources do not mark it as known exploited. The current feed maps Linux/Linux (generic), Linux/Linux (generic). 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 9.1. 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). Check affected ranges and fixed versions before updating.
| Product | Affected versions | Fixed versions |
|---|---|---|
| cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* | Not reported | Not reported |
| cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* | Not reported | Not reported |
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=7449d736bbbd160c76b01b8fcdf72f58a8757d4b <dffb44b2e06a2908e249f0f93156fc987eee1d1c || >=ea41367b2a602f602ea6594fc4a310520dcc64f4 <9b3af35645ff9cd334edc130249f9a2fb2bea25f || >=ea41367b2a602f602ea6594fc4a310520dcc64f4 <512d33bc8ea4ea5c19728ee118715f4b1f4d1926 || >=ea41367b2a602f602ea6594fc4a310520dcc64f4 <a16f70a71be4b5a4eccf39a9bf09b47285f4cb7c || >=ea41367b2a602f602ea6594fc4a310520dcc64f4 <8d09328dfda089675e4c049f3f256064a1d1996b || >=6.6.32 <6.6.140 | dffb44b2e06a2908e249f0f93156fc987eee1d1c, 9b3af35645ff9cd334edc130249f9a2fb2bea25f, 512d33bc8ea4ea5c19728ee118715f4b1f4d1926, a16f70a71be4b5a4eccf39a9bf09b47285f4cb7c, 8d09328dfda089675e4c049f3f256064a1d1996b, 6.6.140 |
| Linux/Linuxgeneric | 6.9 | Not reported |
Published upstream
May 28, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 19, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Aug 5, 2026
In the Linux kernel, the following vulnerability has been resolved: smb/client: fix out-of-bounds read in smb2_compound_op() If a server sends a truncated response but a large OutputBufferLength, and terminates the EA list early, check_wsl_eas() returns success without validating that the entire OutputBufferLength fits within iov_len. Then smb2_compound_op() does: memcpy(idata->wsl.eas, data[0], size[0]); Where size[0] is OutputBufferLength. If iov_len is smaller than size[0], memcpy can read beyond the end of the rsp_iov allocation and leak adjacent kernel heap memory.
Quoted source text, attributed separately from HOL analysis.