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.
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
a5718fe8f70f33b1b5b47a153057cfdd19684598 to < a594100e147a6a67eb29189170f1df3645cda12baffecteda5718fe8f70f33b1b5b47a153057cfdd19684598 to < 8b3e0c1c63015deaf084286899f5b2d0526715deaffecteda5718fe8f70f33b1b5b47a153057cfdd19684598 to < 44c1d902cf0798b60762a7a98be992b9f5ded7ddaffecteda5718fe8f70f33b1b5b47a153057cfdd19684598 to < ac7385af1dca86a5ea704c80ca4dc822083ff9e2affecteda5718fe8f70f33b1b5b47a153057cfdd19684598 to < 431812eb88c200bc3ec33b88782c8cc415842074affecteda5718fe8f70f33b1b5b47a153057cfdd19684598 to < 92f38fe85198ace9b211bc7712b7951acfb94560affecteda5718fe8f70f33b1b5b47a153057cfdd19684598 to < 038f068cced8e9c49e8c419f3112d909ad366a3aaffecteda5718fe8f70f33b1b5b47a153057cfdd19684598 to < 1b001b16bc88f3f7817e228acfd91ee01bdcfcceaffected
Linux Linux
Default version status: affected
5.4affected0 to < 5.4unaffected5.10.261 to ≤ 5.10.*unaffected5.15.212 to ≤ 5.15.*unaffected6.1.178 to ≤ 6.1.*unaffected6.6.145 to ≤ 6.6.*unaffected6.12.97 to ≤ 6.12.*unaffected6.18.40 to ≤ 6.18.*unaffected7.1.5 to ≤ 7.1.*unaffected7.2 to ≤ *unaffected
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 ↗