Answer in brief
CVE-2026-43112 records a High severity (CVSS 8.8) vulnerability in fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath. 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.
Answer in brief
CVE-2026-43112 records a High severity (CVSS 8.8) vulnerability in fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath. 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 8.8. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c63433a09d6ae4c226fcbc66da4c58fc189fd746 <a2ba20c17de8eb028f96b1d85f119d3d25655bd9 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <fbced33599653471b4581dfe1abc7b467031f126 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <5d4fe469fe7dbff7d874c196bb680a82f2625d95 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <86f9c23e0814cfdffda9eedf0c591c51ba209010 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <78ec5bf2f589ec7fd8f169394bfeca541b077317 || >=5.15.11 <5.15.209 | a2ba20c17de8eb028f96b1d85f119d3d25655bd9, fbced33599653471b4581dfe1abc7b467031f126, 5d4fe469fe7dbff7d874c196bb680a82f2625d95, 2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439, 86f9c23e0814cfdffda9eedf0c591c51ba209010, 49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3, 78ec5bf2f589ec7fd8f169394bfeca541b077317, 5.15.209 |
| Linux/Linuxgeneric | 5.16 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 3, 2026
In the Linux kernel, the following vulnerability has been resolved: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath When cifs_sanitize_prepath is called with an empty string or a string containing only delimiters (e.g., "/"), the current logic attempts to check *(cursor2 - 1) before cursor2 has advanced. This results in an out-of-bounds read. This patch adds an early exit check after stripping prepended delimiters. If no path content remains, the function returns NULL. The bug was identified via manual audit and verified using a standalone test case compiled with AddressSanitizer, which triggered a SEGV on affected inputs.
Quoted source text, attributed separately from HOL analysis.
CVSS is 8.8. 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.
| Package | Affected range | Fixed version |
|---|---|---|
| Linux/Linuxgeneric | >=c63433a09d6ae4c226fcbc66da4c58fc189fd746 <a2ba20c17de8eb028f96b1d85f119d3d25655bd9 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <fbced33599653471b4581dfe1abc7b467031f126 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <5d4fe469fe7dbff7d874c196bb680a82f2625d95 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <86f9c23e0814cfdffda9eedf0c591c51ba209010 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3 || >=a31080899d5fdafcccf7f39dd214a814a2c82626 <78ec5bf2f589ec7fd8f169394bfeca541b077317 || >=5.15.11 <5.15.209 | a2ba20c17de8eb028f96b1d85f119d3d25655bd9, fbced33599653471b4581dfe1abc7b467031f126, 5d4fe469fe7dbff7d874c196bb680a82f2625d95, 2d29214448ec0f4e7e18bb1c14dd4a6c07f1c439, 86f9c23e0814cfdffda9eedf0c591c51ba209010, 49b1ce6d7cfb6c5a49f68bf5ccfcfb6ba14e63c3, 78ec5bf2f589ec7fd8f169394bfeca541b077317, 5.15.209 |
| Linux/Linuxgeneric | 5.16 | Not reported |
Published upstream
May 6, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Jul 22, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Jul 3, 2026
In the Linux kernel, the following vulnerability has been resolved: fs/smb/client: fix out-of-bounds read in cifs_sanitize_prepath When cifs_sanitize_prepath is called with an empty string or a string containing only delimiters (e.g., "/"), the current logic attempts to check *(cursor2 - 1) before cursor2 has advanced. This results in an out-of-bounds read. This patch adds an early exit check after stripping prepended delimiters. If no path content remains, the function returns NULL. The bug was identified via manual audit and verified using a standalone test case compiled with AddressSanitizer, which triggered a SEGV on affected inputs.
Quoted source text, attributed separately from HOL analysis.