CVE-2024-36019
In the Linux kernel, the following vulnerability has been resolved: regmap: maple: Fix cache corruption in regcache_maple_drop() When keeping the upper end of a cache block entry, the entry[] array must be indexed by the offset from the base register of…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.24%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In the Linux kernel, the following vulnerability has been resolved: regmap: maple: Fix cache corruption in regcache_maple_drop() When keeping the upper end of a cache block entry, the entry[] array must be indexed by the offset from the base register of the block, i.e. max - mas.index. The code was indexing entry[] by only the register address, leading to an out-of-bounds access that copied some part of the kernel memory over the cache contents. This bug was not detected by the regmap KUnit test because it only tests with a block of registers starting at 0, so mas.index == 0.
- CVSS 3.1
- 7.1 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
- EPSS
- 0.24% probability · 16th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/00bb549d7d63a21532e76e4a334d7807a54d9f31Patch
- https://git.kernel.org/stable/c/3af6c5ac72dc5b721058132a0a1d7779e443175ePatch
- https://git.kernel.org/stable/c/51c4440b9d3fd7c8234e6de9170a487c03506e53Patch
- https://git.kernel.org/stable/c/00bb549d7d63a21532e76e4a334d7807a54d9f31Patch
- https://git.kernel.org/stable/c/3af6c5ac72dc5b721058132a0a1d7779e443175ePatch
- https://git.kernel.org/stable/c/51c4440b9d3fd7c8234e6de9170a487c03506e53Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.