Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d before 45be87c5195f34c0a51598bc91186f600be5c4c9; affected 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d before 2775bf36be7872834a7f8c0a0d9681a1a3e1cd4c; affected 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d before 5fe03b5257095e2beef0bc79e1f068fbd09a24c7; affected 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d before 63ab05e8f9654aa100d366c0236399fda6ffaab1; affected 4d92b95ff2f95f13df9bad0b5a25a9f60e72758d before 0b1c2af8a22c35cb099c735c2f63ea3ba757557d |
| Linux / Linux | affected 5.17; unaffected 0 before 5.17; unaffected 6.6.160 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.52 through 6.18.*; unaffected 7.2.6 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- 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