CVE-2022-49470
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49470
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-49470.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2022-49470
- Downstream
- Related
- Published
- 2025-02-26T02:13:14Z
- Modified
- 2025-10-15T22:23:27.740074Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- Bluetooth: btmtksdio: fix use-after-free at btmtksdio_recv_event
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
Bluetooth: btmtksdio: fix use-after-free at btmtksdiorecvevent
We should not access skb buffer data anymore after hcirecvframe was called.
[ 39.634809] BUG: KASAN: use-after-free in btmtksdiorecvevent+0x1b0 [ 39.634855] Read of size 1 at addr ffffff80cf28a60d by task kworker [ 39.634962] Call trace: [ 39.634974] dumpbacktrace+0x0/0x3b8 [ 39.634999] showstack+0x20/0x2c [ 39.635016] dumpstacklvl+0x60/0x78 [ 39.635040] printaddressdescription+0x70/0x2f0 [ 39.635062] kasanreport+0x154/0x194 [ 39.635079] asanreportload1noabort+0x44/0x50 [ 39.635099] btmtksdiorecvevent+0x1b0/0x1c4 [ 39.635129] btmtksdiotxrxwork+0x6cc/0xac4 [ 39.635157] processonework+0x560/0xc5c [ 39.635177] workerthread+0x7ec/0xcc0 [ 39.635195] kthread+0x2d0/0x3d0 [ 39.635215] retfromfork+0x10/0x20 [ 39.635247] Allocated by task 0: [ 39.635260] (stack is not available) [ 39.635281] Freed by task 2392: [ 39.635295] kasansavestack+0x38/0x68 [ 39.635319] kasansettrack+0x28/0x3c [ 39.635338] kasansetfreeinfo+0x28/0x4c [ 39.635357] kasanslabfree+0x104/0x150 [ 39.635374] _kasanslabfree+0x18/0x28 [ 39.635391] slabfreefreelisthook+0x114/0x248 [ 39.635410] kfree+0xf8/0x2b4 [ 39.635427] skbfreehead+0x58/0x98 [ 39.635447] skbreleasedata+0x2f4/0x410 [ 39.635464] skbreleaseall+0x50/0x60 [ 39.635481] kfreeskb+0xc8/0x25c [ 39.635498] hcieventpacket+0x894/0xca4 [bluetooth] [ 39.635721] hcirxwork+0x1c8/0x68c [bluetooth] [ 39.635925] processonework+0x560/0xc5c [ 39.635951] workerthread+0x7ec/0xcc0 [ 39.635970] kthread+0x2d0/0x3d0 [ 39.635990] retfromfork+0x10/0x20 [ 39.636021] The buggy address belongs to the object at ffffff80cf28a600 which belongs to the cache kmalloc-512 of size 512 [ 39.636039] The buggy address is located 13 bytes inside of 512-byte region [ffffff80cf28a600, ffffff80cf28a800)
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/01c6a899fa6be4f4cbf60c4f44f0f6691155415f
- https://git.kernel.org/stable/c/02ba31e09a26e8cd4582ac8e6163d80284997727
- https://git.kernel.org/stable/c/0fab6361c4ba17d1b43a991bef4238a3c1754d35
- https://git.kernel.org/stable/c/b3cec8a42fcd11d05313c724f27e01b1db77522c
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9aebfd4a2200ab8075e44379c758bccefdc589bbFixedb3cec8a42fcd11d05313c724f27e01b1db77522c
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9aebfd4a2200ab8075e44379c758bccefdc589bbFixed02ba31e09a26e8cd4582ac8e6163d80284997727
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9aebfd4a2200ab8075e44379c758bccefdc589bbFixed01c6a899fa6be4f4cbf60c4f44f0f6691155415f
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced9aebfd4a2200ab8075e44379c758bccefdc589bbFixed0fab6361c4ba17d1b43a991bef4238a3c1754d35