{"id":"CVE-2022-48997","summary":"char: tpm: Protect tpm_pm_suspend with locks","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nchar: tpm: Protect tpm_pm_suspend with locks\n\nCurrently tpm transactions are executed unconditionally in\ntpm_pm_suspend() function, which may lead to races with other tpm\naccessors in the system.\n\nSpecifically, the hw_random tpm driver makes use of tpm_get_random(),\nand this function is called in a loop from a kthread, which means it's\nnot frozen alongside userspace, and so can race with the work done\nduring system suspend:\n\n  tpm tpm0: tpm_transmit: tpm_recv: error -52\n  tpm tpm0: invalid TPM_STS.x 0xff, dumping stack for forensics\n  CPU: 0 PID: 1 Comm: init Not tainted 6.1.0-rc5+ #135\n  Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-20220807_005459-localhost 04/01/2014\n  Call Trace:\n   tpm_tis_status.cold+0x19/0x20\n   tpm_transmit+0x13b/0x390\n   tpm_transmit_cmd+0x20/0x80\n   tpm1_pm_suspend+0xa6/0x110\n   tpm_pm_suspend+0x53/0x80\n   __pnp_bus_suspend+0x35/0xe0\n   __device_suspend+0x10f/0x350\n\nFix this by calling tpm_try_get_ops(), which itself is a wrapper around\ntpm_chip_start(), but takes the appropriate mutex.\n\n[Jason: reworked commit message, added metadata]","modified":"2026-03-20T12:22:05.703758Z","published":"2024-10-21T20:06:12.787Z","related":["SUSE-SU-2024:3983-1","SUSE-SU-2024:3985-1","SUSE-SU-2024:4082-1","SUSE-SU-2024:4100-1","SUSE-SU-2024:4131-1","SUSE-SU-2024:4364-1","SUSE-SU-2025:0034-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48997.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/23393c6461422df5bf8084a086ada9a7e17dc2ba"},{"type":"WEB","url":"https://git.kernel.org/stable/c/25b78bf98b07ff5aceb9b1e24f72ec0236c5c053"},{"type":"WEB","url":"https://git.kernel.org/stable/c/4e0d6c687c925e27fd4bc78a2721d10acf5614d6"},{"type":"WEB","url":"https://git.kernel.org/stable/c/571b6bbbf54d835ea6120f65575cb55cd767e603"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d699373ac5f3545243d3c73a1ccab77fdef8cec6"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/48xxx/CVE-2022-48997.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-48997"},{"type":"PACKAGE","url":"https://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":[{"introduced":"e891db1a18bf11e02533ec2386b796cfd8d60666"},{"fixed":"d699373ac5f3545243d3c73a1ccab77fdef8cec6"},{"fixed":"4e0d6c687c925e27fd4bc78a2721d10acf5614d6"},{"fixed":"571b6bbbf54d835ea6120f65575cb55cd767e603"},{"fixed":"25b78bf98b07ff5aceb9b1e24f72ec0236c5c053"},{"fixed":"23393c6461422df5bf8084a086ada9a7e17dc2ba"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2022-48997.json"}}],"schema_version":"1.7.5"}