Description
In the Linux kernel, the following vulnerability has been resolved:
printk: Fix signed integer overflow when defining LOG_BUF_LEN_MAX
Shifting 1 << 31 on a 32-bit int causes signed integer overflow, which leads to undefined behavior. To prevent this, cast 1 to u32 before performing the shift, ensuring well-defined behavior.
This change explicitly avoids any potential overflow by ensuring that the shift occurs on an unsigned 32-bit integer.
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 | >= e6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e, < 54c14022fa2ba427dc543455c2cf9225903a7174; >= e6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e, < dfb7b179741ee09506dc7719d92f9e1cea01f10e; >= e6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e, < bb8ff054e19fe27f4e5eaac1b05e462894cfe9b1; >= e6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e, < 9a6d43844de2479a3ff8d674c3e2a16172e01598; >= e6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e, < 4acf6bab775dbd22a9a799030a808a7305e01d63; >= e6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e, < 404e5fd918a0b14abec06c7eca128f04c9b98e41; >= e6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e, < 4a2c4e7265b8eed83c25d86d702cea06493cab18; >= e6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e, < 3d6f83df8ff2d5de84b50377e4f0d45e25311c7a; 55b2c1ccb82143be1ed9e1922976dbe63917fe68; 089d475a4cdb5848998b3cb37e545413ed054784; 695583334b6b7f82c39ee124edfbfa48145ed571; 3404019d6d0f4c0108b77d44e97e2e39ca937e6f; >= 4.4.203, < 4.5; >= 4.9.203, < 4.10; >= 4.14.156, < 4.15; >= 4.19.86, < 4.20 |
| Linux | Linux | 4.20 |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | < * |
| Siemens | SIMATIC S7-1500 TM MFP - GNU/Linux subsystem | < * |
References
- https://git.kernel.org/stable/c/3d6f83df8ff2d5de84b50377e4f0d45e25311c7aPatch
- https://git.kernel.org/stable/c/404e5fd918a0b14abec06c7eca128f04c9b98e41Patch
- https://git.kernel.org/stable/c/4a2c4e7265b8eed83c25d86d702cea06493cab18Patch
- https://git.kernel.org/stable/c/4acf6bab775dbd22a9a799030a808a7305e01d63Patch
- https://git.kernel.org/stable/c/54c14022fa2ba427dc543455c2cf9225903a7174
- https://git.kernel.org/stable/c/9a6d43844de2479a3ff8d674c3e2a16172e01598Patch
- https://git.kernel.org/stable/c/bb8ff054e19fe27f4e5eaac1b05e462894cfe9b1
- https://git.kernel.org/stable/c/dfb7b179741ee09506dc7719d92f9e1cea01f10e
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html
Timeline
- Published
- Feb 27, 2025
- Last modified
- Nov 5, 2026
- NVD status
- Modified