CVE-2026-72181mips: sched: Fix CPUMASK_OFFSTACK memory corruption
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: mips: sched: Fix CPUMASK_OFFSTACK memory corruption This patch addresses a critical memory management flaw. When CONFIG_CPUMASK_OFFSTACK is enabled, cpumask_var_t is a pointer. Consequently, sizeof(new_mask) evaluates to the pointer size, causing copy_from_user() to clobber the mask pointer. Furthermore, the old logic performed copy_from_user() before allocating the mask. Fix this by allocating new_mask first. To handle variable-sized user masks correctly, use cpumask_size() to truncate overly large user masks or pad undersized masks with zeros before copying the data directly into the allocated buffer.
- CVSS
- 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Aug 19, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | 295cbf6d63165fe4253cf1d9ceadcda47a318b48 builds before 2f7730c03a9deea3ba7a1c980070d363b4ea2046; from 295cbf6d63165fe4253cf1d9ceadcda47a318b48 before d20ee42f8226607b5693b2bc2f115ca2d270221a; 295cbf6d63165fe4253cf1d9ceadcda47a318b48 builds before 15ba8053fe4162c933855f1676fb321cdb6251c7; from 295cbf6d63165fe4253cf1d9ceadcda47a318b48 before 3446ffb5d03c36f9ce88ede7ca5be319a2968d96; 295cbf6d63165fe4253cf1d9ceadcda47a318b48 builds before 87a56c1e8e36d06ebe8640432f911538ded7827d; 295cbf6d63165fe4253cf1d9ceadcda47a318b48 builds before 1caee6e084a96ada94658f261ced377d85af3f03; from 295cbf6d63165fe4253cf1d9ceadcda47a318b48 before a1dd41d00c57efb1fbc6f361c5f48c9d00cca51c; 295cbf6d63165fe4253cf1d9ceadcda47a318b48 builds before 98e37db4a34d3af3fb2f4648295c25b5e40b20e3 | CNA record |
References
- https://git.kernel.org/stable/c/2f7730c03a9deea3ba7a1c980070d363b4ea2046
- https://git.kernel.org/stable/c/d20ee42f8226607b5693b2bc2f115ca2d270221a
- https://git.kernel.org/stable/c/15ba8053fe4162c933855f1676fb321cdb6251c7
- https://git.kernel.org/stable/c/3446ffb5d03c36f9ce88ede7ca5be319a2968d96
- https://git.kernel.org/stable/c/87a56c1e8e36d06ebe8640432f911538ded7827d
- https://git.kernel.org/stable/c/1caee6e084a96ada94658f261ced377d85af3f03
- https://git.kernel.org/stable/c/a1dd41d00c57efb1fbc6f361c5f48c9d00cca51c
- https://git.kernel.org/stable/c/98e37db4a34d3af3fb2f4648295c25b5e40b20e3
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.