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CVE-2026-64318: Linux

7.1

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: partitions: aix: bound the pp_count scan to the ppe array aix_partition() reads the physical volume descriptor into a fixed-size struct pvd and then scans its physical-partition-extent array: int numpps = be16_to_cpu(pvd->pp_count); ... for (i = 0; i < numpps; i += 1) { struct ppe *p = pvd->ppe + i; ... lp_ix = be16_to_cpu(p->lp_ix); pvd points at a single kmalloc()'d struct pvd whose ppe[] member holds a fixed ARRAY_SIZE(pvd->ppe) (1016) entries, but the loop runs up to the on-disk pp_count. pp_count is an unvalidated __be16 read straight from the descriptor, so a crafted AIX image with pp_count larger than 1016 drives the loop to read pvd->ppe[i] past the end of the allocation (up to 65535 entries, ~2 MB out of bounds). The partition scan runs without mounting anything, when a block device with a crafted AIX/IBM partition table appears (an attacker-supplied image attached with losetup -P, or a device auto-scanned by udev), via msdos_partition() -> aix_partition(). Clamp the scan to the number of entries the ppe[] array can hold.

    Засегнати продукти

    • Linux Linux: 6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6 преди 09861651617ba0fec089e8b9477439e68398c110; 6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6 преди 5eacdb1967378f5e5591cd27a2d8cdee2df1a599; 6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6 преди b5e9c09309e18fd9839ad007c238120353ca0cc4; 6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6 преди fd94a779020f2ecc8b2607f4c20b34acb1763b9a; 6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6 преди 4671bb74bba05fdd4acf670a35758c29e8c97b83; 6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6 преди ce93228e2193a17d2c58b656e439bb39fe5c3af8; 6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6 преди 44f37ee92fdcd377c41bdf6a31cdd8cc7d4c410e; 6ceea22bbbc84fcf6bf0913bb3db8a657e9002f6 преди 2dc0bfd2fe355fb930de63c2f2eb8ced8570c579
    • Linux Linux: 3.11; преди 3.11; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.96 до 6.12.*; 6.18.39 до 6.18.*; 7.1.4 до 7.1.*; 7.2 до *

    История

    • 25 юли 2026 Публикувано

    Други уязвимости в Linux Linux

    Първоизточници

    CVE-2026-64318: Linux | freedomonline.bg