CVE-2024-40956
In the Linux kernel, the following vulnerability has been resolved: dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list Use list_for_each_entry_safe() to allow iterating through the list and deleting the entry in the iteration process.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.27%). 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: dmaengine: idxd: Fix possible Use-After-Free in irq_process_work_list Use list_for_each_entry_safe() to allow iterating through the list and deleting the entry in the iteration process. The descriptor is freed via idxd_desc_complete() and there's a slight chance may cause issue for the list iterator when the descriptor is reused by another thread without it being deleted from the list.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.27% probability · 19th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-416
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/1b08bf5a17c66ab7dbb628df5344da53c8e7ab33Patch
- https://git.kernel.org/stable/c/83163667d881100a485b6c2daa30301b7f68d9b5Patch
- https://git.kernel.org/stable/c/a14968921486793f2a956086895c3793761309ddPatch
- https://git.kernel.org/stable/c/e3215deca4520773cd2b155bed164c12365149a7Patch
- https://git.kernel.org/stable/c/faa35db78b058a2ab6e074ee283f69fa398c36a8Patch
- https://git.kernel.org/stable/c/1b08bf5a17c66ab7dbb628df5344da53c8e7ab33Patch
- https://git.kernel.org/stable/c/83163667d881100a485b6c2daa30301b7f68d9b5Patch
- https://git.kernel.org/stable/c/a14968921486793f2a956086895c3793761309ddPatch
- https://git.kernel.org/stable/c/e3215deca4520773cd2b155bed164c12365149a7Patch
- https://git.kernel.org/stable/c/faa35db78b058a2ab6e074ee283f69fa398c36a8Patch
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.