CVE-2026-80979: 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: net/smc: unregister the connection before draining the rx tasklet smc_conn_free() calls smc_ism_unset_conn() only while the link group is still on its device list, and never sets conn->killed. smc_lgr_terminate_sched() unlinks the group immediately and defers killing its connections to a work item, so a connection freed in that window keeps its smcd->conn[] slot with both gates in smcd_handle_irq() open, and the device can re-arm the receive tasklet after tasklet_kill() has returned. On the DMB-nocopy path the ghost send buffer is freed right after that drain, so the re-armed tasklet dereferences it. Unregister unconditionally and drain before the detach at both teardown sites, mirroring rmb_desc, which smc_buf_unuse() releases after the drain. Clear conn->sndbuf_desc before freeing it as well, so a reader that samples the pointer cannot get one that is already freed.

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Linux Linux: 21f6f41e82e59740e26e06e77bdf58dc7f6f08dd преди b6b6ac713ee82b340a8e3be30b101bd2840deec4; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa преди b4d540ac95cd35c6ebab6afb7eae2bcac7b277a5; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa преди 5bd8b764a610b6b6bc0c4d3d01652747f6e0b5c3; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa преди b74d313567dfc1b7e56629ddbad04e728686f235; ae2be35cbed2c8385e890147ea321a3fcc3ca5fa преди 36cdf5d48ca191dcd71c28cadbe0981b1d25318d; 6.6.66 преди 6.6.157
Linux Linux: 6.10; преди 6.10; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; 7.3 до *

История

11 септември 2026 Публикувано

CVE-2026-80979: Linux

Описание

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История

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