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: scsi: target: core: Fix iSCSI ISID use-after-free in REGISTER AND MOVE core_scsi3_emulate_pro_register_and_move() maps the PERSISTENT RESERVE OUT parameter list with transport_kmap_data_sg() and parses the destination TransportID with target_parse_pr_out_transport_id(). For an iSCSI TransportID (FORMAT CODE 01b), iscsi_parse_pr_out_transport_id() returns the ISID in iport_ptr as a raw pointer into that mapped buffer. The function then unmaps the buffer with transport_kunmap_data_sg() before dereferencing iport_ptr in strcmp(), __core_scsi3_locate_pr_reg() and core_scsi3_alloc_registration(). When the parameter list spans more than one page (PARAMETER LIST LENGTH > 4096), transport_kmap_data_sg() uses vmap() and transport_kunmap_data_sg() does vunmap(), so the kernel virtual address backing iport_ptr is torn down and every subsequent dereference is a use-after-free read of the unmapped region. Keep the parameter list mapped until iport_ptr is no longer needed: drop the early transport_kunmap_data_sg() and unmap once on the success path, right before returning. The error paths already unmap through the existing "if (buf) transport_kunmap_data_sg(cmd)" at the out: label, which now runs on every post-map error exit because buf is no longer cleared early. Only reads of the mapping happen while spinlocks are held; the map and unmap calls remain outside any lock. The sibling caller core_scsi3_decode_spec_i_port() already uses the buffer before unmapping it and is left unchanged.
Засегнати продукти
- Linux Linux: 4949314c7283ea4f9ade182ca599583b89f7edd6 преди 7d56f5c868d92c9d504a34a3ea450bce481c7f63; 4949314c7283ea4f9ade182ca599583b89f7edd6 преди 59a2a5a37dc49a641ad6bc64aee34e5a61025ffd; 4949314c7283ea4f9ade182ca599583b89f7edd6 преди 9f8076cc73dfa6b10155978c160587e986b22169; 4949314c7283ea4f9ade182ca599583b89f7edd6 преди a040004846f1fbe687f6ec76d9ccc27b4ead42e4; 4949314c7283ea4f9ade182ca599583b89f7edd6 преди 05b3e37433cf2eaf8867f1c16528aa347bb212ab; 4949314c7283ea4f9ade182ca599583b89f7edd6 преди cb7bdae7fba404852ade34b0c1445fbaf3e54fbb; 4949314c7283ea4f9ade182ca599583b89f7edd6 преди ef2ee18fec92088c7d8877baf7674e89389ccd66; 4949314c7283ea4f9ade182ca599583b89f7edd6 преди fda6a1f3c3d7047b5ce5654487649c2daa738bfc; d2227f84ba0e97906153ac83db13213fb2e3938d; 3.2.9 преди 3.3
- Linux Linux: 3.3; преди 3.3; 5.10.261 до 5.10.*; 5.15.212 до 5.15.*; 6.1.178 до 6.1.*; 6.6.145 до 6.6.*; 6.12.97 до 6.12.*; 6.18.40 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък
Вид слабост
История
- 15 август 2026 Публикувано
Други уязвимости в Linux Linux
Първоизточници
- https://www.cve.org/CVERecord?id=CVE-2026-72083
- https://nvd.nist.gov/vuln/detail/CVE-2026-72083
- https://git.kernel.org/stable/c/7d56f5c868d92c9d504a34a3ea450bce481c7f63
- https://git.kernel.org/stable/c/59a2a5a37dc49a641ad6bc64aee34e5a61025ffd
- https://git.kernel.org/stable/c/9f8076cc73dfa6b10155978c160587e986b22169
- https://git.kernel.org/stable/c/a040004846f1fbe687f6ec76d9ccc27b4ead42e4
- https://git.kernel.org/stable/c/05b3e37433cf2eaf8867f1c16528aa347bb212ab
- https://git.kernel.org/stable/c/cb7bdae7fba404852ade34b0c1445fbaf3e54fbb
- https://git.kernel.org/stable/c/ef2ee18fec92088c7d8877baf7674e89389ccd66
- https://git.kernel.org/stable/c/fda6a1f3c3d7047b5ce5654487649c2daa738bfc