MIPS: mm: Fix out-of-bounds write in maar_res_walk()
Summary
| CVE | CVE-2026-80627 |
|---|---|
| State | PUBLISHED |
| Assigner | Linux |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-08-28 08:16:46 UTC |
| Updated | 2026-08-28 08:16:46 UTC |
| 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. |
Risk And Classification
EPSS: 0.001760000 probability, percentile 0.072550000 (date 2026-08-30)
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Linux | Linux | affected a5718fe8f70f33b1b5b47a153057cfdd19684598 a594100e147a6a67eb29189170f1df3645cda12b git | Not specified |
| CNA | Linux | Linux | affected a5718fe8f70f33b1b5b47a153057cfdd19684598 8b3e0c1c63015deaf084286899f5b2d0526715de git | Not specified |
| CNA | Linux | Linux | affected a5718fe8f70f33b1b5b47a153057cfdd19684598 44c1d902cf0798b60762a7a98be992b9f5ded7dd git | Not specified |
| CNA | Linux | Linux | affected a5718fe8f70f33b1b5b47a153057cfdd19684598 ac7385af1dca86a5ea704c80ca4dc822083ff9e2 git | Not specified |
| CNA | Linux | Linux | affected a5718fe8f70f33b1b5b47a153057cfdd19684598 431812eb88c200bc3ec33b88782c8cc415842074 git | Not specified |
| CNA | Linux | Linux | affected a5718fe8f70f33b1b5b47a153057cfdd19684598 92f38fe85198ace9b211bc7712b7951acfb94560 git | Not specified |
| CNA | Linux | Linux | affected a5718fe8f70f33b1b5b47a153057cfdd19684598 038f068cced8e9c49e8c419f3112d909ad366a3a git | Not specified |
| CNA | Linux | Linux | affected a5718fe8f70f33b1b5b47a153057cfdd19684598 1b001b16bc88f3f7817e228acfd91ee01bdcfcce git | Not specified |
| CNA | Linux | Linux | affected 5.4 | Not specified |
| CNA | Linux | Linux | unaffected 5.4 semver | Not specified |
| CNA | Linux | Linux | unaffected 5.10.261 5.10.* semver | Not specified |
| CNA | Linux | Linux | unaffected 5.15.212 5.15.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.1.178 6.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.6.145 6.6.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.12.97 6.12.* semver | Not specified |
| CNA | Linux | Linux | unaffected 6.18.40 6.18.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.1.5 7.1.* semver | Not specified |
| CNA | Linux | Linux | unaffected 7.2 * original_commit_for_fix | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| git.kernel.org/stable/c/1b001b16bc88f3f7817e228acfd91ee01bdcfcce | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/8b3e0c1c63015deaf084286899f5b2d0526715de | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/92f38fe85198ace9b211bc7712b7951acfb94560 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/a594100e147a6a67eb29189170f1df3645cda12b | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/ac7385af1dca86a5ea704c80ca4dc822083ff9e2 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/44c1d902cf0798b60762a7a98be992b9f5ded7dd | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/431812eb88c200bc3ec33b88782c8cc415842074 | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| git.kernel.org/stable/c/038f068cced8e9c49e8c419f3112d909ad366a3a | 416baaa9-dc9f-4396-8d5f-8c081fb06d67 | git.kernel.org | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
No vendor comments have been submitted for this CVE.
There are currently no legacy QID mappings associated with this CVE.