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CVE-2026-98524: Linux

7.8

CVSS 3.1

Няма данни

Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)

Няма потвърждение

Атакува се

Няма данни

Време до експлоатация

Атакува се локално, без особени условия, с обикновен потребителски вход и без действие от потребителя.

    Описание

    Оригинално описание

    In the Linux kernel, the following vulnerability has been resolved: rds: ib: Clear the sg list when mapping an MR fails rds_ib_map_frmr() stores the caller's scatterlist in the MR before DMA mapping and registration can fail. On failure, __rds_rdma_map() unpins the pages and frees the scatterlist, but rds_ib_free_frmr() can still return the MR to the pool with the stale pointer set. This leaves the pool with a dangling scatterlist and can lead to local privilege escalation. KASAN detects the resulting use-after-free when the MR is later torn down: BUG: KASAN: slab-use-after-free in __rds_ib_teardown_mr Read of size 8 Call Trace: __rds_ib_teardown_mr rds_ib_unreg_frmr rds_ib_flush_mr_pool rds_ib_flush_mrs rds_free_mr rds_setsockopt Store the scatterlist in the MR only after DMA mapping succeeds. If DMA mapping fails, return directly while the MR fields remain clear; the caller keeps ownership of the scatterlist and its pinned pages. If a later registration step fails, unmap the scatterlist and clear the MR fields before returning.

    Засегнати продукти

    • Linux Linux: 1659185fb4d0025835eb2058a141f0746c5cab00 преди 1be3211e6ac77adbb1eac01314d989d243b32c59; 1659185fb4d0025835eb2058a141f0746c5cab00 преди c42d316163f89cd23de2f3e24558177a8c29bad8; 1659185fb4d0025835eb2058a141f0746c5cab00 преди 8dca3c81344532a7f05edb3d12f31f3009410a90; 1659185fb4d0025835eb2058a141f0746c5cab00 преди 49ba5ed0129906e0362c2e4b5e21c89b2a41e115; 1659185fb4d0025835eb2058a141f0746c5cab00 преди 4468df5bcdef959fd96494e9968f323561a45f4c; 1659185fb4d0025835eb2058a141f0746c5cab00 преди e2ee0616260080376123997488b5cf8a3870b8d9; 1659185fb4d0025835eb2058a141f0746c5cab00 преди b36d32f30c3f1e58e3a5ae79d0f52836a316b36e; 1659185fb4d0025835eb2058a141f0746c5cab00 преди 58eb1b3325edac42dc6df72c80962bd53a3c8ca7
    • Linux Linux: 4.6; преди 4.6; 5.10.271 до 5.10.*; 5.15.222 до 5.15.*; 6.1.189 до 6.1.*; 6.6.158 до 6.6.*; 6.12.112 до 6.12.*; 6.18.55 до 6.18.*; 7.2.9 до 7.2.*; от 7.3 нататък

    История

    • 18 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-98524: Linux | freedomonline.bg