Description
In the Linux kernel, the following vulnerability has been resolved: hwrng: core - fix rng list on registration error hwrng_register(rng) does the following: 1. Checks if rng has name and read methods set 2. Checks if the name already exists 3. Adds rng to global rng_list 4. May try to set rng to current_rng If step 4 fails, it returns an error. However, it does not remove the rng from rng_list, causing a dangling reference which can result in use-after-free if the caller frees rng, since registration failed. Add a list_del_init() cleanup step.
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
2bbb6983887fefc8026beab01198d30f47b7bd22 to < 30b2cc2966dac87ee95a99c49e28486c2a8129cdaffected2bbb6983887fefc8026beab01198d30f47b7bd22 to < e37c67f768234e14cd6ea3b081568dd915c5b67eaffected2bbb6983887fefc8026beab01198d30f47b7bd22 to < de4f1bcb61a73cc896decdbd27d61a34add93b53affected2bbb6983887fefc8026beab01198d30f47b7bd22 to < cf293c9c7424de0d04b51367d07f40570ce80231affected2bbb6983887fefc8026beab01198d30f47b7bd22 to < bee8d1fcdc8f389b595b0a4cf6fe8440f499458aaffected2bbb6983887fefc8026beab01198d30f47b7bd22 to < 3a5834db2b1ce25649f330e78efe1ccde78967fdaffected42802952a2725f85f7e36ee3b29593af5fe87197affected4.9.320 to < 4.10affected
Linux Linux
Default version status: affected
4.14affected0 to < 4.14unaffected6.1.191 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/30b2cc2966dac87ee95a99c49e28486c2a8129cd ↗
- https://git.kernel.org/stable/c/e37c67f768234e14cd6ea3b081568dd915c5b67e ↗
- https://git.kernel.org/stable/c/de4f1bcb61a73cc896decdbd27d61a34add93b53 ↗
- https://git.kernel.org/stable/c/cf293c9c7424de0d04b51367d07f40570ce80231 ↗
- https://git.kernel.org/stable/c/bee8d1fcdc8f389b595b0a4cf6fe8440f499458a ↗
- https://git.kernel.org/stable/c/3a5834db2b1ce25649f330e78efe1ccde78967fd ↗