CVE-2026-80627
Description
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.
How to fix
- Linux Linuxa594100e147a6a67eb29189170f1df3645cda12b, 8b3e0c1c63015deaf084286899f5b2d0526715de, 44c1d902cf0798b60762a7a98be992b9f5ded7dd, ac7385af1dca86a5ea704c80ca4dc822083ff9e2, 431812eb88c200bc3ec33b88782c8cc415842074, 92f38fe85198ace9b211bc7712b7951acfb94560, 038f068cced8e9c49e8c419f3112d909ad366a3a, 1b001b16bc88f3f7817e228acfd91ee01bdcfcce or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Linux Linux | a5718fe8f70f33b1b5b47a153057cfdd19684598 ≤ v < a594100e147a6a67eb29189170f1df3645cda12b, a5718fe8f70f33b1b5b47a153057cfdd19684598 ≤ v < 8b3e0c1c63015deaf084286899f5b2d0526715de, a5718fe8f70f33b1b5b47a153057cfdd19684598 ≤ v < 44c1d902cf0798b60762a7a98be992b9f5ded7dd, a5718fe8f70f33b1b5b47a153057cfdd19684598 ≤ v < ac7385af1dca86a5ea704c80ca4dc822083ff9e2, a5718fe8f70f33b1b5b47a153057cfdd19684598 ≤ v < 431812eb88c200bc3ec33b88782c8cc415842074, a5718fe8f70f33b1b5b47a153057cfdd19684598 ≤ v < 92f38fe85198ace9b211bc7712b7951acfb94560, a5718fe8f70f33b1b5b47a153057cfdd19684598 ≤ v < 038f068cced8e9c49e8c419f3112d909ad366a3a, a5718fe8f70f33b1b5b47a153057cfdd19684598 ≤ v < 1b001b16bc88f3f7817e228acfd91ee01bdcfcce, 5.4 | a594100e147a6a67eb29189170f1df3645cda12b, 8b3e0c1c63015deaf084286899f5b2d0526715de, 44c1d902cf0798b60762a7a98be992b9f5ded7dd, ac7385af1dca86a5ea704c80ca4dc822083ff9e2, 431812eb88c200bc3ec33b88782c8cc415842074, 92f38fe85198ace9b211bc7712b7951acfb94560, 038f068cced8e9c49e8c419f3112d909ad366a3a, 1b001b16bc88f3f7817e228acfd91ee01bdcfcce |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.