{"id":"DEBIAN-CVE-2026-43285","details":"In the Linux kernel, the following vulnerability has been resolved:  mm/slab: do not access current-\u003emems_allowed_seq if !allow_spin  Lockdep complains when get_from_any_partial() is called in an NMI context, because current-\u003emems_allowed_seq is seqcount_spinlock_t and not NMI-safe:    ================================   WARNING: inconsistent lock state   6.19.0-rc5-kfree-rcu+ #315 Tainted: G                 N   --------------------------------   inconsistent {INITIAL USE} -\u003e {IN-NMI} usage.   kunit_try_catch/9989 [HC1[1]:SC0[0]:HE0:SE1] takes:   ffff889085799820 (&____s-\u003eseqcount#3){.-.-}-{0:0}, at: ___slab_alloc+0x58f/0xc00   {INITIAL USE} state was registered at:     lock_acquire+0x185/0x320     kernel_init_freeable+0x391/0x1150     kernel_init+0x1f/0x220     ret_from_fork+0x736/0x8f0     ret_from_fork_asm+0x1a/0x30   irq event stamp: 56   hardirqs last  enabled at (55): [\u003cffffffff850a68d7\u003e] _raw_spin_unlock_irq+0x27/0x70   hardirqs last disabled at (56): [\u003cffffffff850858ca\u003e] __schedule+0x2a8a/0x6630   softirqs last  enabled at (0): [\u003cffffffff81536711\u003e] copy_process+0x1dc1/0x6a10   softirqs last disabled at (0): [\u003c0000000000000000\u003e] 0x0    other info that might help us debug this:    Possible unsafe locking scenario:           CPU0          ----     lock(&____s-\u003eseqcount#3);     \u003cInterrupt\u003e       lock(&____s-\u003eseqcount#3);     *** DEADLOCK ***  According to Documentation/locking/seqlock.rst, seqcount_t is not NMI-safe and seqcount_latch_t should be used when read path can interrupt the write-side critical section. In this case, do not access current-\u003emems_allowed_seq and avoid retry.","modified":"2026-09-14T17:03:38.452078283Z","published":"2026-05-08T14:16:35.337Z","upstream":["CVE-2026-43285"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-43285"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.19.6-1"}]}],"versions":["6.12.100-1","6.12.101-1","6.12.105-1","6.12.107-1","6.12.38-1","6.12.41-1","6.12.43-1","6.12.43-1~bpo12+1","6.12.48-1","6.12.57-1","6.12.57-1~bpo12+1","6.12.63-1","6.12.63-1~bpo12+1","6.12.69-1","6.12.69-1~bpo12+1","6.12.73-1","6.12.73-1~bpo12+1","6.12.74-1","6.12.74-2","6.12.74-2~bpo12+1","6.12.85-1","6.12.85-1~bpo12+1","6.12.86-1","6.12.86-1~bpo12+1","6.12.88-1","6.12.88-1~bpo12+1","6.12.90-1","6.12.90-1~bpo12+1","6.12.90-2","6.12.90-2~bpo12+1","6.12.94-1","6.12.94-1~bpo12+1","6.12.95-1","6.12.95-1~bpo12+1","6.12.96-1","6.13.10-1~exp1","6.13.11-1~exp1","6.13.2-1~exp1","6.13.3-1~exp1","6.13.4-1~exp1","6.13.5-1~exp1","6.13.6-1~exp1","6.13.7-1~exp1","6.13.8-1~exp1","6.13.9-1~exp1","6.13~rc6-1~exp1","6.13~rc7-1~exp1","6.14.3-1~exp1","6.14.5-1~exp1","6.14.6-1~exp1","6.15-1~exp1","6.15.1-1~exp1","6.15.2-1~exp1","6.15.3-1~exp1","6.15.4-1~exp1","6.15.5-1~exp1","6.15.6-1~exp1","6.15~rc7-1~exp1","6.16-1~exp1","6.16.1-1~exp1","6.16.10-1","6.16.11-1","6.16.12-1","6.16.12-1~bpo13+1","6.16.12-2","6.16.3-1","6.16.3-1~bpo13+1","6.16.5-1","6.16.6-1","6.16.7-1","6.16.8-1","6.16.9-1","6.16~rc7-1~exp1","6.17.10-1","6.17.11-1","6.17.12-1","6.17.13-1","6.17.13-1~bpo13+1","6.17.2-1~exp1","6.17.5-1~exp1","6.17.6-1","6.17.7-1","6.17.7-2","6.17.8-1","6.17.8-1~bpo13+1","6.17.9-1","6.18.1-1~exp1","6.18.10-1","6.18.12-1","6.18.12-1~bpo13+1","6.18.13-1","6.18.14-1","6.18.15-1","6.18.15-1~bpo13+1","6.18.2-1~exp1","6.18.3-1","6.18.5-1","6.18.5-1~bpo13+1","6.18.8-1","6.18.9-1","6.18.9-1~bpo13+1","6.18~rc4-1~exp1","6.18~rc4-1~exp2","6.18~rc5-1~exp1","6.18~rc6-1~exp1","6.18~rc7-1~exp1","6.19-1~exp1","6.19.2-1~exp1","6.19.3-1~exp1","6.19.4-1~exp1","6.19.5-1~exp1","6.19~rc4-1~exp1","6.19~rc5-1~exp1","6.19~rc6-1~exp1","6.19~rc7-1~exp1","6.19~rc8-1~exp1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-43285.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}