CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката не може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: dm-thin: fix metadata refcount underflow There's a bug in dm-thin in the function rebalance_children. If the internal btree node has one entry, the code tries to copy all btree entries from the node's child to the node itself and then decrement the child's reference count. If the child node is shared (it has reference count > 1), we won't free it, so there would be two pointers to each of the grandchildren nodes. But the reference counts of the grandchildren is not increased, thus the reference count doesn't match the number of pointers that point to the grandchildren. This results in "device mapper: space map common: unable to decrement block" errors. Fix this bug by incrementing reference counts on the grandchildren if the btree node is shared.
Засегнати продукти
- Linux Linux: 3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 преди b719d12cb94df345e9ad2715fd0abe9afcaeb111; 3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 преди f49b41c9eb7c6ff00df27cd49cea210abbadd8ad; 3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 преди f06f6aededd792a754cd677c02b3d3016d868c2c; 3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 преди 12161e03d33afce781f68fa11cc6060538862fad; 3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 преди 323d252a4a378834e4fe68298ca61cfc5dd3a460; 3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 преди 85311a585a26640760cd0f3349ab9f2905691044; 3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 преди 5ec0debbcfd43596e32c1239e993de06a704e04c; 3241b1d3e0aaafbfcd320f4d71ade629728cc4f4 преди 09a65adc7d8bbfce06392cb6d375468e2728ead5
- Linux Linux: 3.2; преди 3.2; 5.10.259 до 5.10.*; 5.15.209 до 5.15.*; 6.1.175 до 6.1.*; 6.6.140 до 6.6.*; 6.12.88 до 6.12.*; 6.18.30 до 6.18.*; 7.0.7 до 7.0.*; 7.1 до *
- Siemens SIMATIC S7-1500 TM MFP - GNU/Linux subsystem: преди *
Вид слабост
История
- 28 май 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-46107
- https://nvd.nist.gov/vuln/detail/CVE-2026-46107
- https://git.kernel.org/stable/c/b719d12cb94df345e9ad2715fd0abe9afcaeb111
- https://git.kernel.org/stable/c/f49b41c9eb7c6ff00df27cd49cea210abbadd8ad
- https://git.kernel.org/stable/c/f06f6aededd792a754cd677c02b3d3016d868c2c
- https://git.kernel.org/stable/c/12161e03d33afce781f68fa11cc6060538862fad
- https://git.kernel.org/stable/c/323d252a4a378834e4fe68298ca61cfc5dd3a460
- https://git.kernel.org/stable/c/85311a585a26640760cd0f3349ab9f2905691044
- https://git.kernel.org/stable/c/5ec0debbcfd43596e32c1239e993de06a704e04c
- https://git.kernel.org/stable/c/09a65adc7d8bbfce06392cb6d375468e2728ead5
- https://cert-portal.siemens.com/productcert/html/ssa-784472.html