CVE-2026-98831: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: of/overlay: don't leak fragment references when changeset init fails init_overlay_changeset() stores the number of initialized fragments in ovcs->count only on full success. When find_target() or the __symbols__ lookup fails partway through, the target and overlay references taken for the fragments initialized so far are never dropped: free_overlay_changeset() bounds its cleanup loop by ovcs->count, which is still 0. Store the running count on the error path so free_overlay_changeset() puts whatever was set up. The store is guarded by ovcs->fragments because on the allocation-failure path cnt still holds the counting pass total while there is no fragments array; everywhere else cnt only counts fully-initialized fragments.

Засегнати продукти

• Linux Linux: 61b4de4e0b384f4a22c55c3bada604da49cec4e1 преди c654f283d7db20648a5bbf979209f78d4fa9be3f; 61b4de4e0b384f4a22c55c3bada604da49cec4e1 преди 64517aeaa3d8b158e4d01321a095be48cb551251; 61b4de4e0b384f4a22c55c3bada604da49cec4e1 преди bbe3dc64b28a14bd9ecb514bbf5115ac8472ed80; 61b4de4e0b384f4a22c55c3bada604da49cec4e1 преди 702b5db6e7b3865be70675d57d6fd7dde80d02b6; 61b4de4e0b384f4a22c55c3bada604da49cec4e1 преди 894573e2fdaeb1b15030b7eebc22615edf28a6cd; 61b4de4e0b384f4a22c55c3bada604da49cec4e1 преди 7a46f1917b320cc8762183b802301da02a191b6a; 61b4de4e0b384f4a22c55c3bada604da49cec4e1 преди 3a23fb158ba517b77a2e5258263bdfdaa480f758; 61b4de4e0b384f4a22c55c3bada604da49cec4e1 преди 1d62f0f2bc7edb12ed09f71203df0e47fa4efca4
• Linux Linux: 4.15; преди 4.15; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.160 до 6.6.*; 6.12.113 до 6.12.*; 6.18.56 до 6.18.*; 7.2.10 до 7.2.*; 7.3 до *

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-98831
• https://nvd.nist.gov/vuln/detail/CVE-2026-98831
• https://git.kernel.org/stable/c/c654f283d7db20648a5bbf979209f78d4fa9be3f
• https://git.kernel.org/stable/c/64517aeaa3d8b158e4d01321a095be48cb551251
• https://git.kernel.org/stable/c/bbe3dc64b28a14bd9ecb514bbf5115ac8472ed80
• https://git.kernel.org/stable/c/702b5db6e7b3865be70675d57d6fd7dde80d02b6
• https://git.kernel.org/stable/c/894573e2fdaeb1b15030b7eebc22615edf28a6cd
• https://git.kernel.org/stable/c/7a46f1917b320cc8762183b802301da02a191b6a
• https://git.kernel.org/stable/c/3a23fb158ba517b77a2e5258263bdfdaa480f758
• https://git.kernel.org/stable/c/1d62f0f2bc7edb12ed09f71203df0e47fa4efca4