CVE-2026-80627MIPS: mm: Fix out-of-bounds write in maar_res_walk()
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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: mm: Fix out-of-bounds write in maar_res_walk() maar_res_walk() uses wi->num_cfg as the index into the fixed-size wi->cfg array, but checks whether the array is full only after it has filled the selected entry. If walk_system_ram_range() reports more than 16 memory ranges, the overflow call writes one struct maar_config past the end of the array before WARN_ON() prevents num_cfg from advancing. Move the full-array check before taking the array slot and return non-zero when the scratch array is full, so walk_system_ram_range() terminates the walk instead of invoking the callback for further ranges.
- CVSS
- Not yet scored
- 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 28, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Linux Linux linux:linux (from the name) | from a5718fe8f70f33b1b5b47a153057cfdd19684598 before a594100e147a6a67eb29189170f1df3645cda12b; from a5718fe8f70f33b1b5b47a153057cfdd19684598 before 8b3e0c1c63015deaf084286899f5b2d0526715de; from a5718fe8f70f33b1b5b47a153057cfdd19684598 before 44c1d902cf0798b60762a7a98be992b9f5ded7dd; from a5718fe8f70f33b1b5b47a153057cfdd19684598 before ac7385af1dca86a5ea704c80ca4dc822083ff9e2; from a5718fe8f70f33b1b5b47a153057cfdd19684598 before 431812eb88c200bc3ec33b88782c8cc415842074; from a5718fe8f70f33b1b5b47a153057cfdd19684598 before 92f38fe85198ace9b211bc7712b7951acfb94560; from a5718fe8f70f33b1b5b47a153057cfdd19684598 before 038f068cced8e9c49e8c419f3112d909ad366a3a; from a5718fe8f70f33b1b5b47a153057cfdd19684598 before 1b001b16bc88f3f7817e228acfd91ee01bdcfcce | CNA record |
References
- https://git.kernel.org/stable/c/a594100e147a6a67eb29189170f1df3645cda12b
- https://git.kernel.org/stable/c/8b3e0c1c63015deaf084286899f5b2d0526715de
- https://git.kernel.org/stable/c/44c1d902cf0798b60762a7a98be992b9f5ded7dd
- https://git.kernel.org/stable/c/ac7385af1dca86a5ea704c80ca4dc822083ff9e2
- https://git.kernel.org/stable/c/431812eb88c200bc3ec33b88782c8cc415842074
- https://git.kernel.org/stable/c/92f38fe85198ace9b211bc7712b7951acfb94560
- https://git.kernel.org/stable/c/038f068cced8e9c49e8c419f3112d909ad366a3a
- https://git.kernel.org/stable/c/1b001b16bc88f3f7817e228acfd91ee01bdcfcce
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.