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CVE-2026-89965: 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: nvdimm/btt: reject an arena whose nfree is below the lane count The BTT info block's nfree field, the number of reserve free blocks, is read from the medium without validation. btt_freelist_init() and btt_rtt_init() size the per-lane freelist[] and rtt[] arrays by nfree, but the I/O path indexes them by the lane from nd_region_acquire_lane(), which is bounded by nd_region->num_lanes (ND_MAX_LANES), not by nfree. A crafted or foreign arena whose nfree is below the lane count makes freelist[lane]/rtt[lane] run past the allocation: an out-of-bounds write. btt.rst documents the nlanes = min(nfree, num_cpus) invariant, which the code does not currently honor: num_lanes is ND_MAX_LANES regardless of nfree. Reject an arena whose nfree is below num_lanes at discovery, before the per-lane arrays are allocated, enforcing that invariant.

    Засегнати продукти

    • Linux Linux: 5212e11fde4d40fa627668b4f2222d20db488f71 преди eb491343d2d1784121ad9af91c25b338c28913c3; 5212e11fde4d40fa627668b4f2222d20db488f71 преди 59d5cd1f42b4bab3609512c3cb3d3540d3d21da7; 5212e11fde4d40fa627668b4f2222d20db488f71 преди f6c5313aae794ecca8f762c1a3493de5c266f120; 5212e11fde4d40fa627668b4f2222d20db488f71 преди f9bf05c63b77d000e9c01f3e47af36973887d350; 5212e11fde4d40fa627668b4f2222d20db488f71 преди 6f79d1a5f2611a3d36e9312be5425cd9cb397c51; 5212e11fde4d40fa627668b4f2222d20db488f71 преди 6b1faf1f099f7060b5f1f2f0d024132581f1726e; 5212e11fde4d40fa627668b4f2222d20db488f71 преди 9dfa11cef4750b67591307f2c62e47a23d60e4b7; 5212e11fde4d40fa627668b4f2222d20db488f71 преди 6a1f2e5ed9267ca19187038ac635393c165213ac
    • Linux Linux: 4.2; преди 4.2; 5.10.270 до 5.10.*; 5.15.221 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.110 до 6.12.*; 6.18.51 до 6.18.*; 7.2.5 до 7.2.*; от 7.3 нататък

    История

    • 16 септември 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-89965: Linux | freedomonline.bg