CVE-2023-52494
In the Linux kernel, the following vulnerability has been resolved: bus: mhi: host: Add alignment check for event ring read pointer Though we do check the event ring read pointer by "is_valid_ring_ptr" to make sure it is in the buffer range, but there…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.28%). 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: bus: mhi: host: Add alignment check for event ring read pointer Though we do check the event ring read pointer by "is_valid_ring_ptr" to make sure it is in the buffer range, but there is another risk the pointer may be not aligned. Since we are expecting event ring elements are 128 bits(struct mhi_ring_element) aligned, an unaligned read pointer could lead to multiple issues like DoS or ring buffer memory corruption. So add a alignment check for event ring read pointer.
- 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
- 0.28% probability · 20th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- linux/linux kernel
- Source
- 416baaa9-dc9f-4396-8d5f-8c081fb06d67
References
- https://git.kernel.org/stable/c/2df39ac8f813860f79782807c3f7acff40b3c551Mailing List, Patch
- https://git.kernel.org/stable/c/76ed0c6f6418cec6efe6f65a0b91f84be80b72eb
- https://git.kernel.org/stable/c/94991728c84f8df54fd9eec9b85855ef9057ea08Mailing List, Patch
- https://git.kernel.org/stable/c/a9ebfc405fe1be145f414eafadcbf09506082010Mailing List, Patch
- https://git.kernel.org/stable/c/ecf8320111822a1ae5d5fc512953eab46d543d0bMailing List, Patch
- https://git.kernel.org/stable/c/eff9704f5332a13b08fbdbe0f84059c9e7051d5fMailing List, Patch
- https://git.kernel.org/stable/c/2df39ac8f813860f79782807c3f7acff40b3c551Mailing List, Patch
- https://git.kernel.org/stable/c/94991728c84f8df54fd9eec9b85855ef9057ea08Mailing List, Patch
- https://git.kernel.org/stable/c/a9ebfc405fe1be145f414eafadcbf09506082010Mailing List, Patch
- https://git.kernel.org/stable/c/ecf8320111822a1ae5d5fc512953eab46d543d0bMailing List, Patch
- https://git.kernel.org/stable/c/eff9704f5332a13b08fbdbe0f84059c9e7051d5fMailing List, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.