Description
In the Linux kernel, the following vulnerability has been resolved: net: add missing ref_tracker_dir_exit() to alloc_netdev_mqs() sashiko is reporting that trying to read /sys/kernel/debug/ref_tracker/* causes use-afer-free crash when either alloc_percpu() or dev_addr_init() in alloc_netdev_mqs() failed, for commit 4d92b95ff2f9 ("net: add net device refcount tracker infrastructure") added ref_tracker_dir_exit() to only free_netdev() path.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4d92b95ff2f95f13df9bad0b5a25a9f60e72758d to < b0859020cab4ea6101478141aeec1b052ed80bddaffected4d92b95ff2f95f13df9bad0b5a25a9f60e72758d to < 45be87c5195f34c0a51598bc91186f600be5c4c9affected4d92b95ff2f95f13df9bad0b5a25a9f60e72758d to < 2775bf36be7872834a7f8c0a0d9681a1a3e1cd4caffected4d92b95ff2f95f13df9bad0b5a25a9f60e72758d to < 5fe03b5257095e2beef0bc79e1f068fbd09a24c7affected4d92b95ff2f95f13df9bad0b5a25a9f60e72758d to < 63ab05e8f9654aa100d366c0236399fda6ffaab1affected4d92b95ff2f95f13df9bad0b5a25a9f60e72758d to < 0b1c2af8a22c35cb099c735c2f63ea3ba757557daffected
Linux Linux
Default version status: affected
5.17affected0 to < 5.17unaffected6.1.191 to ≤ 6.1.*unaffected6.6.160 to ≤ 6.6.*unaffected6.12.110 to ≤ 6.12.*unaffected6.18.52 to ≤ 6.18.*unaffected7.2.6 to ≤ 7.2.*unaffected7.3 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/b0859020cab4ea6101478141aeec1b052ed80bdd ↗
- https://git.kernel.org/stable/c/45be87c5195f34c0a51598bc91186f600be5c4c9 ↗
- https://git.kernel.org/stable/c/2775bf36be7872834a7f8c0a0d9681a1a3e1cd4c ↗
- https://git.kernel.org/stable/c/5fe03b5257095e2beef0bc79e1f068fbd09a24c7 ↗
- https://git.kernel.org/stable/c/63ab05e8f9654aa100d366c0236399fda6ffaab1 ↗
- https://git.kernel.org/stable/c/0b1c2af8a22c35cb099c735c2f63ea3ba757557d ↗