CVE-2026-72117: Linux

Описание

Оригинално описание

In the Linux kernel, the following vulnerability has been resolved: can: bcm: fix data race on rx_stamp/rx_ifindex in bcm_rx_handler() For an rx op subscribed on all interfaces (ifindex == 0), the same op is registered once in the shared per-netns wildcard filter list, so bcm_rx_handler() can run concurrently on different CPUs for frames arriving on different net devices. op->rx_stamp and op->rx_ifindex were written before bcm_rx_update_lock was taken, allowing concurrent writers to race each other - including a torn store of the 64-bit rx_stamp on 32-bit platforms. Beyond a torn store bcm_send_to_user() must report the timestamp/ifindex of the very same frame whose content it is delivering. So the assignment is placed in the same unbroken bcm_rx_update_lock section as the content comparison. As a side effect, the RTR-request frame feature (which never reach bcm_send_to_user()) no longer updates rx_stamp/rx_ifindex, since only the notification path needs them.

Засегнати продукти

• Linux Linux: ffd980f976e7fd666c2e61bf8ab35107efd11828 преди b64f60c468d149aca22ea56bb842b9730215aaa5; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди c8a5d7cb095d3b12bd9dcf752d6ca0ff50872ac5; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 4b97410f4bba18d2ee2784c8e089104f387bc27c; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 5f246b96ab47523ec9b8ea870b5c567a3cb1eb1c; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 656ff69ef235699035e57d9e1ae417e62a38aa7f; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 136de17f38630307991c59aa7080012a99451783; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди c312b750bb5ac3348cfc85dab25e90937bd4d251; ffd980f976e7fd666c2e61bf8ab35107efd11828 преди 58fd6cbc8541216af1d7ed272ea7ac2b66d50fd8
• Linux Linux: 2.6.25; преди 2.6.25; 5.10.265 до 5.10.*; 5.15.216 до 5.15.*; 6.1.183 до 6.1.*; 6.6.148 до 6.6.*; 6.12.101 до 6.12.*; 6.18.42 до 6.18.*; 7.1.5 до 7.1.*; от 7.2 нататък

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-2026-72117
• https://nvd.nist.gov/vuln/detail/CVE-2026-72117
• https://git.kernel.org/stable/c/b64f60c468d149aca22ea56bb842b9730215aaa5
• https://git.kernel.org/stable/c/c8a5d7cb095d3b12bd9dcf752d6ca0ff50872ac5
• https://git.kernel.org/stable/c/4b97410f4bba18d2ee2784c8e089104f387bc27c
• https://git.kernel.org/stable/c/5f246b96ab47523ec9b8ea870b5c567a3cb1eb1c
• https://git.kernel.org/stable/c/656ff69ef235699035e57d9e1ae417e62a38aa7f
• https://git.kernel.org/stable/c/136de17f38630307991c59aa7080012a99451783
• https://git.kernel.org/stable/c/c312b750bb5ac3348cfc85dab25e90937bd4d251
• https://git.kernel.org/stable/c/58fd6cbc8541216af1d7ed272ea7ac2b66d50fd8