Description
In the Linux kernel, the following vulnerability has been resolved: drm/amd/pm: fix double free in si_parse_power_table() In function si_parse_power_table(), array adev->pm.dpm.ps and its member is allocated. If the allocation of each member fails, the array itself is freed and returned with an error code. However, the array is later freed again in si_dpm_fini() function which is called when the function returns an error. This leads to potential double free of the array adev->pm.dpm.ps, as well as leak of its array members, since the members are not freed in the allocation function and the array is not nulled when freed. In addition adev->pm.dpm.num_ps, which keeps track of the allocated array member, is not updated until the member allocation is successfully finished, this could also lead to either use after free, or uninitialized variable access in si_dpm_fini(). Fix this by postponing the free of the array until si_dpm_fini() and increment adev->pm.dpm.num_ps everytime the array member is allocated.
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
841686df9f7d2942cfd94d024b8591fa3f74ef7c to < 2615464854505188f909d0c07c37a6623693b5c7affected841686df9f7d2942cfd94d024b8591fa3f74ef7c to < 6c5bdaa1325be7f04b79ea992ab216739192d342affected841686df9f7d2942cfd94d024b8591fa3f74ef7c to < c0e811c4ccf3b42705976285e3a94cc82dea7300affected841686df9f7d2942cfd94d024b8591fa3f74ef7c to < af832028af6f44c6c45645757079c4ed6884ade5affected841686df9f7d2942cfd94d024b8591fa3f74ef7c to < ca1ce206894dd976275c78ee38dbc19873f22de9affected841686df9f7d2942cfd94d024b8591fa3f74ef7c to < a5ce7051db044290b1a95045ff03c249005a3aa4affected841686df9f7d2942cfd94d024b8591fa3f74ef7c to < fd2eff8b9dcbe469c3b7bbbc7083ab5ed94de07baffected841686df9f7d2942cfd94d024b8591fa3f74ef7c to < 43eb9b667b95f2a31c63e8949b0d2161b9be59c3affected841686df9f7d2942cfd94d024b8591fa3f74ef7c to < f3fa2becf2fc25b6ac7cf8d8b1a2e4a86b3b72bdaffected
Linux Linux
Default version status: affected
4.9affected0 to < 4.9unaffected4.9.318 to ≤ 4.9.*unaffected4.14.283 to ≤ 4.14.*unaffected4.19.247 to ≤ 4.19.*unaffected5.4.198 to ≤ 5.4.*unaffected5.10.121 to ≤ 5.10.*unaffected5.15.46 to ≤ 5.15.*unaffected5.17.14 to ≤ 5.17.*unaffected5.18.3 to ≤ 5.18.*unaffected5.19 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/2615464854505188f909d0c07c37a6623693b5c7 ↗
- https://git.kernel.org/stable/c/6c5bdaa1325be7f04b79ea992ab216739192d342 ↗
- https://git.kernel.org/stable/c/c0e811c4ccf3b42705976285e3a94cc82dea7300 ↗
- https://git.kernel.org/stable/c/af832028af6f44c6c45645757079c4ed6884ade5 ↗
- https://git.kernel.org/stable/c/ca1ce206894dd976275c78ee38dbc19873f22de9 ↗
- https://git.kernel.org/stable/c/a5ce7051db044290b1a95045ff03c249005a3aa4 ↗
- https://git.kernel.org/stable/c/fd2eff8b9dcbe469c3b7bbbc7083ab5ed94de07b ↗
- https://git.kernel.org/stable/c/43eb9b667b95f2a31c63e8949b0d2161b9be59c3 ↗
- https://git.kernel.org/stable/c/f3fa2becf2fc25b6ac7cf8d8b1a2e4a86b3b72bd ↗