CVE-2026-68165

CVE CVE-2026-68165EUVD EUVD-2026-55551Published 2026-08-10T11:59:33.000Z

What the advisory describes

In the Linux kernel, the following vulnerability has been resolved: mm/damon/core: validate ranges in damon_set_regions() DAMON core logic assumes zero length regions don't exist. However, a few DAMON API callers including DAMON_SYSFS, DAMON_RECLAIM and DAMON_LRU_SORT allow users to set empty monitoring target regions. This could result in WARN_ONCE() on CONFIG_DAMON_DEBUG_SANITY enabled kernel, and divide-by-zero from damon_merge_two_regions(). For example, the WANR_ONCE() can be triggered like below. # grep DAMON_DEBUG_SANITY /boot/config-$(uname -r) # CONFIG_DAMON_DEBUG_SANITY=y # damo start # cd /sys/kernel/mm/damon/admin/kdamonds/0 # echo 0 > contexts/0/targets/0/regions/0/start # echo 0 > contexts/0/targets/0/regions/0/end # echo commit > state # dmesg [....] [ 73.705780] ------------[ cut here ]------------ [ 73.707552] start 0 >= end 0 [ 73.708452] WARNING: mm/damon/core.c:359 at damon_new_region+0x6e/0x80, CPU#1: kdamond.0/758 [...] All DAMON API callers eventually use damon_set_regions() to setup the regions. Add the validation logic in the function.

Source: EUVD (ENISA), in the words of the advisory.

Products the advisory names

These come from the advisory itself, not from any check we performed.

Linux — Linux 43b0536cb4710e7bb591edfda7e68a1c327a3409 <c927b73a5694c735314ea10e7c81c07f9bd51ad7; patch: 7.2-rc5; patch: 0; 5.16; patch: 7.1.6; 43b0536cb4710e7bb591edfda7e68a1c327a3409 <b585facbafbb5cf117b37b1c75819ac046646c27; patch: 6.12.101; 43b0536cb4710e7bb591edfda7e68a1c327a3409 <43aaddd0fa92010a68adeda7744c7cf497a1c8e9; patch: 6.6.148; 43b0536cb4710e7bb591edfda7e68a1c327a3409 <1292c0ecb1caefb8ca064a3639d5673991e8810c; patch: 6.18.42; 43b0536cb4710e7bb591edfda7e68a1c327a3409 <4b6f1d6d5d07855bd1bb9e64922b049062138bfa

The versions shown are the advisory's own. Patchlage compares no version numbers and derives no judgement from them — which version is installed is something a person has to look up.

Carried in the product catalogue

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Linux — Linux

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