Description
In the Linux kernel, the following vulnerability has been resolved:
block: avoid possible overflow for chunk_sectors check in blk_stack_limits()
In blk_stack_limits(), we check that the t->chunk_sectors value is a multiple of the t->physical_block_size value.
However, by finding the chunk_sectors value in bytes, we may overflow the unsigned int which holds chunk_sectors, so change the check to be based on sectors.
Metrics
CVSS 3.1 5.5/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| Linux | Linux | >= 22ada802ede89829dd010a317d9b812b7df7111a, < 418751910044649baa2b424ea31cce3fc4dcc253; >= 22ada802ede89829dd010a317d9b812b7df7111a, < 8b3ce085b52e674290cbfdd07034e7653ffbe4dc; >= 22ada802ede89829dd010a317d9b812b7df7111a, < 31f2f080898e50cbf2bae62d35f9f2a997547b38; >= 22ada802ede89829dd010a317d9b812b7df7111a, < 3b9d69f0e68aa6b0acd9791c45d445154a8c66e9; >= 22ada802ede89829dd010a317d9b812b7df7111a, < 46aa80ef49594ed7de685ecbc673b291e9a2c159; >= 22ada802ede89829dd010a317d9b812b7df7111a, < 5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2; >= 22ada802ede89829dd010a317d9b812b7df7111a, < 14beeef4aafecc8a41de534e31fb5be94739392f; >= 22ada802ede89829dd010a317d9b812b7df7111a, < 448dfecc7ff807822ecd47a5c052acedca7d09e8 |
| Linux | Linux | 5.10 |
| Siemens | SIMATIC CN 4100 | < V5.0 |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) | >= V3.1.7, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.5, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.6, < * |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) | >= V3.1.7, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.5, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.6, < * |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) | >= V3.1.7, < * |
References
- https://git.kernel.org/stable/c/14beeef4aafecc8a41de534e31fb5be94739392fPatch
- https://git.kernel.org/stable/c/31f2f080898e50cbf2bae62d35f9f2a997547b38Patch
- https://git.kernel.org/stable/c/3b9d69f0e68aa6b0acd9791c45d445154a8c66e9Patch
- https://git.kernel.org/stable/c/418751910044649baa2b424ea31cce3fc4dcc253Patch
- https://git.kernel.org/stable/c/448dfecc7ff807822ecd47a5c052acedca7d09e8Patch
- https://git.kernel.org/stable/c/46aa80ef49594ed7de685ecbc673b291e9a2c159Patch
- https://git.kernel.org/stable/c/5e276e6ff9aacf8901b9c3265c3cdd2568c9fff2Patch
- https://git.kernel.org/stable/c/8b3ce085b52e674290cbfdd07034e7653ffbe4dcPatch
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.htmlThird Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html
- https://cert-portal.siemens.com/productcert/html/ssa-082556.html
- https://cert-portal.siemens.com/productcert/html/ssa-457936.html
Timeline
- Published
- Sep 12, 2025
- Last modified
- Nov 10, 2026
- NVD status
- Modified