CVE-2026-52908: Linux, заобикаляне на вход и права

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: RDMA: During rereg_mr ensure that REREG_ACCESS is compatible If IB_MR_REREG_ACCESS changes from RO to RW then the umem has to be re-evaluated to ensure it is properly pinned as RW. Since the umem is hidden inside each driver's mr struct add a ib_umem_check_rereg() function that each driver has to call before processing IB_MR_REREG_ACCESS. mlx4 has to retain its duplicate ib_access_writable check because it implements IB_MR_REREG_ACCESS | IB_MR_REREG_TRANS by changing both items in place sequentially while the MR is live, so it will continue to not support this combination.

Засегнати продукти

• Linux Linux: b40656aa7d559adc1fe689396dc58b92a9a27286 преди 09dc18894148381d3bfc550083b1236043870dce; b40656aa7d559adc1fe689396dc58b92a9a27286 преди eba5df21eda0fe7418efbea2f799f8ea1b8ca94c; b40656aa7d559adc1fe689396dc58b92a9a27286 преди 2904e985a2917b5dac65df82733065e78a65fc9d; b40656aa7d559adc1fe689396dc58b92a9a27286 преди 50334a05a950840b39a1ce3d2a173b4183db9b3e; b40656aa7d559adc1fe689396dc58b92a9a27286 преди badad6fad60def1b9805559dd81dbab3d97b82aa
• Linux Linux: 6.2; преди 6.2; 6.6.143 до 6.6.*; 6.12.94 до 6.12.*; 6.18.36 до 6.18.*; 7.0.13 до 7.0.*; от 7.1 нататък

Вид слабост

• CWE-285 Неправилна авторизация

История

Други уязвимости в Linux Linux

• 8.1CVE-2026-99270
• 7.8CVE-2026-99269
• CVE-2026-99268
• CVE-2026-99266
• CVE-2026-99267

Първоизточници

• https://www.cve.org/CVERecord?id=CVE-2026-52908
• https://nvd.nist.gov/vuln/detail/CVE-2026-52908
• https://git.kernel.org/stable/c/09dc18894148381d3bfc550083b1236043870dce
• https://git.kernel.org/stable/c/eba5df21eda0fe7418efbea2f799f8ea1b8ca94c
• https://git.kernel.org/stable/c/2904e985a2917b5dac65df82733065e78a65fc9d
• https://git.kernel.org/stable/c/50334a05a950840b39a1ce3d2a173b4183db9b3e
• https://git.kernel.org/stable/c/badad6fad60def1b9805559dd81dbab3d97b82aa