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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
e6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e to < 54c14022fa2ba427dc543455c2cf9225903a7174affectede6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e to < dfb7b179741ee09506dc7719d92f9e1cea01f10eaffectede6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e to < bb8ff054e19fe27f4e5eaac1b05e462894cfe9b1affectede6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e to < 9a6d43844de2479a3ff8d674c3e2a16172e01598affectede6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e to < 4acf6bab775dbd22a9a799030a808a7305e01d63affectede6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e to < 404e5fd918a0b14abec06c7eca128f04c9b98e41affectede6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e to < 4a2c4e7265b8eed83c25d86d702cea06493cab18affectede6fe3e5b7d16e8f146a4ae7fe481bc6e97acde1e to < 3d6f83df8ff2d5de84b50377e4f0d45e25311c7aaffected55b2c1ccb82143be1ed9e1922976dbe63917fe68affected089d475a4cdb5848998b3cb37e545413ed054784affected695583334b6b7f82c39ee124edfbfa48145ed571affected3404019d6d0f4c0108b77d44e97e2e39ca937e6faffected4.4.203 to < 4.5affected4.9.203 to < 4.10affected4.14.156 to < 4.15affected4.19.86 to < 4.20affected
Linux Linux
Default version status: affected
4.20affected0 to < 4.20unaffected5.4.291 to ≤ 5.4.*unaffected5.10.235 to ≤ 5.10.*unaffected5.15.179 to ≤ 5.15.*unaffected6.1.129 to ≤ 6.1.*unaffected6.6.78 to ≤ 6.6.*unaffected6.12.14 to ≤ 6.12.*unaffected6.13.3 to ≤ 6.13.*unaffected6.14 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/54c14022fa2ba427dc543455c2cf9225903a7174 ↗
- https://git.kernel.org/stable/c/dfb7b179741ee09506dc7719d92f9e1cea01f10e ↗
- https://git.kernel.org/stable/c/bb8ff054e19fe27f4e5eaac1b05e462894cfe9b1 ↗
- https://git.kernel.org/stable/c/9a6d43844de2479a3ff8d674c3e2a16172e01598 ↗
- https://git.kernel.org/stable/c/4acf6bab775dbd22a9a799030a808a7305e01d63 ↗
- https://git.kernel.org/stable/c/404e5fd918a0b14abec06c7eca128f04c9b98e41 ↗
- https://git.kernel.org/stable/c/4a2c4e7265b8eed83c25d86d702cea06493cab18 ↗
- https://git.kernel.org/stable/c/3d6f83df8ff2d5de84b50377e4f0d45e25311c7a ↗
- https://lists.debian.org/debian-lts-announce/2025/05/msg00030.html ↗
- https://lists.debian.org/debian-lts-announce/2025/03/msg00028.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-265688.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html ↗