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: nvme-tcp: fix host memory disclosure on R2T for a read command nvme_tcp_handle_r2t() does not check the direction of the request the R2T refers to. A malicious controller can send an R2T for a READ and the host will answer it: nvme_tcp_setup_h2c_data_pdu() builds the H2CData header and nvme_tcp_try_send_data() sends the request's data buffer. That buffer is the READ destination, so its contents go to the controller. The command then completes normally and nothing is logged. Against a test controller that answers every READ with an R2T, a 4096 byte buffered read returned all 4096 bytes, split over two R2Ts. The pages contained stale kernel data, including an array of struct page pointers. Reject an R2T for a request that is not a write.
Засегнати продукти
- Linux Linux: 3f2304f8c6d6ed97849057bd16fee99e434ca796 преди effe898669c5f69ed519d6339be01ee9cd91d1a4; 3f2304f8c6d6ed97849057bd16fee99e434ca796 преди 377aa04d7b3e73ffef6364818def188da8d6f025; 3f2304f8c6d6ed97849057bd16fee99e434ca796 преди 49a4dcf57608ebf6432dbcb203ed25e7ed581445; 3f2304f8c6d6ed97849057bd16fee99e434ca796 преди bc4013c7cce58d46f792c8c87bc8c8318a70190e; 3f2304f8c6d6ed97849057bd16fee99e434ca796 преди a4c3c7310156493797c920b10d8648c07aa05403; 3f2304f8c6d6ed97849057bd16fee99e434ca796 преди 3b3d27670c0c890ba7cf1bc3614cab61bde6d25c; 3f2304f8c6d6ed97849057bd16fee99e434ca796 преди 3a0b05145053a5fad1a2ddb4e4d87b07385e63e5; 3f2304f8c6d6ed97849057bd16fee99e434ca796 преди 6efbc52237facda35d2d874fe1765bb4839275d8
- Linux Linux: 5.0; преди 5.0; 5.10.273 до 5.10.*; 5.15.224 до 5.15.*; 6.1.188 до 6.1.*; 6.6.157 до 6.6.*; 6.12.109 до 6.12.*; 6.18.50 до 6.18.*; 7.2.4 до 7.2.*; от 7.3 нататък
История
- 11 септември 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-89481
- https://nvd.nist.gov/vuln/detail/CVE-2026-89481
- https://git.kernel.org/stable/c/effe898669c5f69ed519d6339be01ee9cd91d1a4
- https://git.kernel.org/stable/c/377aa04d7b3e73ffef6364818def188da8d6f025
- https://git.kernel.org/stable/c/49a4dcf57608ebf6432dbcb203ed25e7ed581445
- https://git.kernel.org/stable/c/bc4013c7cce58d46f792c8c87bc8c8318a70190e
- https://git.kernel.org/stable/c/a4c3c7310156493797c920b10d8648c07aa05403
- https://git.kernel.org/stable/c/3b3d27670c0c890ba7cf1bc3614cab61bde6d25c
- https://git.kernel.org/stable/c/3a0b05145053a5fad1a2ddb4e4d87b07385e63e5
- https://git.kernel.org/stable/c/6efbc52237facda35d2d874fe1765bb4839275d8