Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: media: cobalt: Avoid freeing ALSA private data twice snd_cobalt_card_create() stores cobsc in sc->private_data and installs snd_cobalt_card_private_free() as sc->private_free. From that point, snd_card_free(sc) releases cobsc through the ALSA card cleanup path. If cobalt_alsa_init() fails after snd_cobalt_card_create(), the err_exit_free path calls snd_card_free(sc) and then kfree(cobsc). That second free releases the same object again. Remove the explicit kfree(cobsc) and leave ownership with the ALSA card. This issue was found by a static analysis checker and confirmed by manual source review.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 85756a069c55e0315ac5990806899cfb607b987f before 75bbf45e3a954e292ae26832d2df40ca2e3ee452; affected 85756a069c55e0315ac5990806899cfb607b987f before fe65028ee72a7e07e572b351891bd7a1f8917d33; affected 85756a069c55e0315ac5990806899cfb607b987f before 61dfa8ded5efc3a25d331fa9ce5cebb85531fe70; affected 85756a069c55e0315ac5990806899cfb607b987f before 42e00371f83c3fc7b99a36bf0229c74ad5d3c7d8; affected 85756a069c55e0315ac5990806899cfb607b987f before 6cbc8a73b3464ebeccc49987b7233b6b087b8504; affected 85756a069c55e0315ac5990806899cfb607b987f before cb1218da234ea15fa14d90e2d049d686874d7aa3; affected 85756a069c55e0315ac5990806899cfb607b987f before 8c6610e230b9355cf7df5a338a0592c0f088c00b; affected 85756a069c55e0315ac5990806899cfb607b987f before 3a7d6b9c4cb5ac18cbd3f1c7f8c7b159c42ba0b1 |
| Linux / Linux | affected 4.2; unaffected 0 before 4.2; unaffected 5.10.270 through 5.10.*; unaffected 5.15.221 through 5.15.*; unaffected 6.1.188 through 6.1.*; unaffected 6.6.157 through 6.6.*; unaffected 6.12.110 through 6.12.*; unaffected 6.18.51 through 6.18.*; unaffected 7.2.5 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/75bbf45e3a954e292ae26832d2df40ca2e3ee452
- https://git.kernel.org/stable/c/fe65028ee72a7e07e572b351891bd7a1f8917d33
- https://git.kernel.org/stable/c/61dfa8ded5efc3a25d331fa9ce5cebb85531fe70
- https://git.kernel.org/stable/c/42e00371f83c3fc7b99a36bf0229c74ad5d3c7d8
- https://git.kernel.org/stable/c/6cbc8a73b3464ebeccc49987b7233b6b087b8504
- https://git.kernel.org/stable/c/cb1218da234ea15fa14d90e2d049d686874d7aa3
- https://git.kernel.org/stable/c/8c6610e230b9355cf7df5a338a0592c0f088c00b
- https://git.kernel.org/stable/c/3a7d6b9c4cb5ac18cbd3f1c7f8c7b159c42ba0b1