Description
In the Linux kernel, the following vulnerability has been resolved: iommu/amd: Fix potential buffer overflow in parse_ivrs_acpihid There is a string parsing logic error which can lead to an overflow of hid or uid buffers. Comparing ACPIID_LEN against a total string length doesn't take into account the lengths of individual hid and uid buffers so the check is insufficient in some cases. For example if the length of hid string is 4 and the length of the uid string is 260, the length of str will be equal to ACPIID_LEN + 1 but uid string will overflow uid buffer which size is 256. The same applies to the hid string with length 13 and uid string with length 250. Check the length of hid and uid strings separately to prevent buffer overflow. Found by Linux Verification Center (linuxtesting.org) with SVACE.
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
ca3bf5d47cec8b7614bcb2e9132c40081d6d81db to < 2b65060c84ee4d8dc64fae6d2728b528e9e832e1affectedca3bf5d47cec8b7614bcb2e9132c40081d6d81db to < a65ebfed65fa62797ec1f5f1dcf7adb157a2de1eaffectedca3bf5d47cec8b7614bcb2e9132c40081d6d81db to < 466d9da267079a8d3b69fa72dfa3a732e1f6dbb5affectedca3bf5d47cec8b7614bcb2e9132c40081d6d81db to < c3f37faa71f5d26dd2144b3f2b14525ec8f5e41faffectedca3bf5d47cec8b7614bcb2e9132c40081d6d81db to < 13d67528e1ae4486e9ab24b70122fab104c73c29affectedca3bf5d47cec8b7614bcb2e9132c40081d6d81db to < 10d901a95f8e766e5aa0bb9a983fb41271f64718affectedca3bf5d47cec8b7614bcb2e9132c40081d6d81db to < c8bdfc0297965bb13fa439d36ca9c4f7c8447f0faffectedca3bf5d47cec8b7614bcb2e9132c40081d6d81db to < 8dee308e4c01dea48fc104d37f92d5b58c50b96caffected
Linux Linux
Default version status: affected
4.7affected0 to < 4.7unaffected5.4.294 to ≤ 5.4.*unaffected5.10.238 to ≤ 5.10.*unaffected5.15.182 to ≤ 5.15.*unaffected6.1.138 to ≤ 6.1.*unaffected6.6.90 to ≤ 6.6.*unaffected6.12.28 to ≤ 6.12.*unaffected6.14.6 to ≤ 6.14.*unaffected6.15 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/2b65060c84ee4d8dc64fae6d2728b528e9e832e1 ↗
- https://git.kernel.org/stable/c/a65ebfed65fa62797ec1f5f1dcf7adb157a2de1e ↗
- https://git.kernel.org/stable/c/466d9da267079a8d3b69fa72dfa3a732e1f6dbb5 ↗
- https://git.kernel.org/stable/c/c3f37faa71f5d26dd2144b3f2b14525ec8f5e41f ↗
- https://git.kernel.org/stable/c/13d67528e1ae4486e9ab24b70122fab104c73c29 ↗
- https://git.kernel.org/stable/c/10d901a95f8e766e5aa0bb9a983fb41271f64718 ↗
- https://git.kernel.org/stable/c/c8bdfc0297965bb13fa439d36ca9c4f7c8447f0f ↗
- https://git.kernel.org/stable/c/8dee308e4c01dea48fc104d37f92d5b58c50b96c ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00007.html ↗
- https://lists.debian.org/debian-lts-announce/2025/08/msg00010.html ↗