CVE-2026-43220: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: iommu/amd: serialize sequence allocation under concurrent TLB invalidations With concurrent TLB invalidations, completion wait randomly gets timed out because cmd_sem_val was incremented outside the IOMMU spinlock, allowing CMD_COMPL_WAIT commands to be queued out of sequence and breaking the ordering assumption in wait_on_sem(). Move the cmd_sem_val increment under iommu->lock so completion sequence allocation is serialized with command queuing. And remove the unnecessary return.

Засегнати продукти

• Linux Linux: f2f65b28d802a667119147444ec2ae33eebf9a58 преди d51bf43193b1e95dc4e34e540dc76e19def2ae5a; 715c263119fd1b918a9fcbd8a36ea5b604a46324 преди fca7aa0264ae99e5ff287d0ced5af0b82b121c4f; e15768e68820142077bbca402d8e902f64ade1b0 преди 5000ce7fcb31067566a1a1a2e5b5bbff93625242; 496269d12072ecb219826485bdbec70c92a8eef5 преди 48caa7542a795c9679ec1bd1bc2592e05a7369a4; d2a0cac10597068567d336e85fa3cbdbe8ca62bf преди 9e249c48412828e807afddc21527eb734dc9bd3d; 69d9339c02eddfc2a345be7220651068a3684383; 6.1.191 преди 6.2
• Linux Linux: 6.6.128 преди 6.6.140; 6.12.75 преди 6.12.88

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99265
• CVE-2026-99261
• CVE-2026-99260

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-43220
• https://nvd.nist.gov/vuln/detail/CVE-2026-43220
• https://git.kernel.org/stable/c/d51bf43193b1e95dc4e34e540dc76e19def2ae5a
• https://git.kernel.org/stable/c/fca7aa0264ae99e5ff287d0ced5af0b82b121c4f
• https://git.kernel.org/stable/c/5000ce7fcb31067566a1a1a2e5b5bbff93625242
• https://git.kernel.org/stable/c/48caa7542a795c9679ec1bd1bc2592e05a7369a4
• https://git.kernel.org/stable/c/9e249c48412828e807afddc21527eb734dc9bd3d