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CVE-2026-99156: 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: scsi: st: Fix use-after-free race between st_remove() and st_open() st_remove() drops the probe reference on the scsi_tape with kref_put() and only afterwards removes its index from st_index_idr. If that was the last reference, scsi_tape_release() frees the structure while it is still published in the idr. scsi_tape_get(), called from st_open(), looks up the tape in st_index_idr and takes a reference under st_ref_mutex and st_index_lock. remove_cdevs() does not wait for opens that are already past chrdev_open(), so an open that is blocked on st_ref_mutex while st_remove() holds it can take the mutex as soon as st_remove() drops it, find the freed tpnt in the idr and call kref_get() on it: BUG: KASAN: slab-use-after-free in st_open Write of size 4 ... st_open (drivers/scsi/st.c:254 drivers/scsi/st.c:1291) chrdev_open ... Freed by task ...: kfree st_remove (drivers/scsi/st.c:4512) Remove the index from the idr before dropping the reference, all under st_ref_mutex. A concurrent scsi_tape_get() now either runs first and holds a valid reference that keeps the tape alive, or runs afterwards and finds nothing, so st_open() fails with -ENXIO. This restores the ordering st_remove() had before the conversion to st_index_idr, where the tape was unpublished from scsi_tapes[] before the final kref_put().

    Засегнати продукти

    • Linux Linux: 6c648d95a6af4a79241a916871df17c84c68ea20 преди 7d7f9d2ee4b0841f3eba9fa3627044ad329428de; 6c648d95a6af4a79241a916871df17c84c68ea20 преди d9517fc39ec3ee13eadefdc17f45300f7d23ed8c; 6c648d95a6af4a79241a916871df17c84c68ea20 преди e7a5da4a4820210aa7d7cd8e6eb25aabe9e5b5a7; 6c648d95a6af4a79241a916871df17c84c68ea20 преди 00ff1128123d4bdfacd28d68fb4b6e6f657a3648; 6c648d95a6af4a79241a916871df17c84c68ea20 преди 5ef230f734e0d23db007c8405f38b7e226740084; 6c648d95a6af4a79241a916871df17c84c68ea20 преди a1647b653549ff29f0422a63eabf329b842f3822; 6c648d95a6af4a79241a916871df17c84c68ea20 преди 18a0e3733ce38718688e813e5e2d1106bd4830e5; 6c648d95a6af4a79241a916871df17c84c68ea20 преди 71caf7f84bd62a4bf91cc95abd2de690afb8d15f
    • Linux Linux: 3.7; преди 3.7; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.191 до 6.1.*; 6.6.161 до 6.6.*; 6.12.115 до 6.12.*; 6.18.59 до 6.18.*; 7.2.13 до 7.2.*; от 7.3 нататък

    История

    • 28 октомври 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-99156: Linux | freedomonline.bg