CVE-2026-68316: accel: ethosu: Fix element size accounting for cmd stream validation
Greg Kroah-Hartman <[email protected]>
| Newsgroups | org.kernel.vger.linux-cve-announce |
|---|---|
| Message-ID | <2026081032-CVE-2026-68316-d5a9@gregkh> |
From: Greg Kroah-Hartman <[email protected]> Description =========== In the Linux kernel, the following vulnerability has been resolved: accel: ethosu: Fix element size accounting for cmd stream validation There are 2 issues with the element size handling in the command stream validation which result in too small of a size calculated when the element size is 16/32/64 bits. For NHWC format, the element size is simply missing from the calculation. The bitfield for the element size is different between IFM/IFM2 and OFM. IFM and IFM2 encode the precision in parameter bits 2:3, while OFM uses bits 1:2. The Linux kernel CVE team has assigned CVE-2026-68316 to this issue. Affected and fixed versions =========================== Issue introduced in 6.19 with commit 5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b and fixed in 7.1.6 with commit b4ae748f8e6cb65bb86e5a281bbb5b5e5f106527 Issue introduced in 6.19 with commit 5a5e9c0228e613f0ef2a58b9782d7c0ea8f1e58b and fixed in 7.2-rc5 with commit 18a551482a4a326790698b273e76d7575a51a57d Please see https://www.kernel.org for a full list of currently supported kernel versions by the kernel community. Unaffected versions might change over time as fixes are backported to older supported kernel versions. The official CVE entry at https://cve.org/CVERecord/?id=CVE-2026-68316 will be updated if fixes are backported, please check that for the most up to date information about this issue. Affected files ============== The file(s) affected by this issue are: drivers/accel/ethosu/ethosu_gem.c Mitigation ========== The Linux kernel CVE team recommends that you update to the latest stable kernel version for this, and many other bugfixes. Individual changes are never tested alone, but rather are part of a larger kernel release. Cherry-picking individual commits is not recommended or supported by the Linux kernel community at all. If however, updating to the latest release is impossible, the individual changes to resolve this issue can be found at these commits: https://git.kernel.org/stable/c/b4ae748f8e6cb65bb86e5a281bbb5b5e5f106527 https://git.kernel.org/stable/c/18a551482a4a326790698b273e76d7575a51a57d