CVSS 3.1
Вероятност да бъде експлоатирана в следващите 30 дни (EPSS)
Атакува се
Време до експлоатация
Атакува се по мрежата, без особени условия, без вход и без действие от потребителя.
- Експлоатация: няма данни за експлоатация
- Атаката може да се автоматизира
Описание
Оригинално описание
In the Linux kernel, the following vulnerability has been resolved: nvmet-tcp: Fix potential UAF when ddgst mismatch Shivam Kumar found via vulnerability testing: When data digest is enabled on an NVMe/TCP connection and a digest mismatch occurs on a non-final H2C_DATA PDU during an R2T-based data transfer, the digest error handler in nvmet_tcp_try_recv_ddgst() calls nvmet_req_uninit() — which performs percpu_ref_put() on the submission queue — but does NOT mark the command as completed. It does not set cqe->status, does not modify rbytes_done, and does not clear any flag. When the subsequent fatal error triggers queue teardown, nvmet_tcp_uninit_data_in_cmds() iterates all commands, checks nvmet_tcp_need_data_in() for each one, and finds that the already-uninited command still appears to need data (because rbytes_done < transfer_len and cqe->status == 0). It therefore calls nvmet_req_uninit() a second time on the same command — a double percpu_ref_put against a single percpu_ref_get.
Засегнати продукти
- Linux Linux: 91edfca6f8b364d60cde3ddefaf7d03ddf35774b преди dfb902462bca478f050224ec7a7195aafa7643b1; fda871c0ba5d2eed2cd1c881573168129da70058 преди 7e558308eba14c8136cb1e615f0c850f76d1fc0a; fda871c0ba5d2eed2cd1c881573168129da70058 преди 96fe2513df590e74b04253a45089cae75569570e; fda871c0ba5d2eed2cd1c881573168129da70058 преди e091ff83d962f9ed00d9bd70443676de9fe98bdc; fda871c0ba5d2eed2cd1c881573168129da70058 преди 6f9442983a3e4227afd1c83a5251ddbca585ea21; fda871c0ba5d2eed2cd1c881573168129da70058 преди 088ee46c18d99baef453afd74181dd40ade044ad; fda871c0ba5d2eed2cd1c881573168129da70058 преди dbbd07d0a7020b80f6a7028e561908f7b83b3d5a; 4b17476d809273617d3317fa0d4ae78aa488d760; 5.10.20 преди 5.10.265; 5.11.3 преди 5.12
- Linux Linux: 5.12; преди 5.12; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; от 7.1 нататък
Вид слабост
История
- 27 юли 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-64535
- https://nvd.nist.gov/vuln/detail/CVE-2026-64535
- https://git.kernel.org/stable/c/dfb902462bca478f050224ec7a7195aafa7643b1
- https://git.kernel.org/stable/c/7e558308eba14c8136cb1e615f0c850f76d1fc0a
- https://git.kernel.org/stable/c/96fe2513df590e74b04253a45089cae75569570e
- https://git.kernel.org/stable/c/e091ff83d962f9ed00d9bd70443676de9fe98bdc
- https://git.kernel.org/stable/c/6f9442983a3e4227afd1c83a5251ddbca585ea21
- https://git.kernel.org/stable/c/088ee46c18d99baef453afd74181dd40ade044ad
- https://git.kernel.org/stable/c/dbbd07d0a7020b80f6a7028e561908f7b83b3d5a