CVE-2022-48997 (GCVE-0-2022-48997)

Vulnerability from cvelistv5 – Published: 2024-10-21 20:06 – Updated: 2025-05-04 08:27
VLAI?
Title
char: tpm: Protect tpm_pm_suspend with locks
Summary
In the Linux kernel, the following vulnerability has been resolved: char: tpm: Protect tpm_pm_suspend with locks Currently tpm transactions are executed unconditionally in tpm_pm_suspend() function, which may lead to races with other tpm accessors in the system. Specifically, the hw_random tpm driver makes use of tpm_get_random(), and this function is called in a loop from a kthread, which means it's not frozen alongside userspace, and so can race with the work done during system suspend: tpm tpm0: tpm_transmit: tpm_recv: error -52 tpm tpm0: invalid TPM_STS.x 0xff, dumping stack for forensics CPU: 0 PID: 1 Comm: init Not tainted 6.1.0-rc5+ #135 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-20220807_005459-localhost 04/01/2014 Call Trace: tpm_tis_status.cold+0x19/0x20 tpm_transmit+0x13b/0x390 tpm_transmit_cmd+0x20/0x80 tpm1_pm_suspend+0xa6/0x110 tpm_pm_suspend+0x53/0x80 __pnp_bus_suspend+0x35/0xe0 __device_suspend+0x10f/0x350 Fix this by calling tpm_try_get_ops(), which itself is a wrapper around tpm_chip_start(), but takes the appropriate mutex. [Jason: reworked commit message, added metadata]
Severity ?
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: e891db1a18bf11e02533ec2386b796cfd8d60666 , < d699373ac5f3545243d3c73a1ccab77fdef8cec6 (git)
Affected: e891db1a18bf11e02533ec2386b796cfd8d60666 , < 4e0d6c687c925e27fd4bc78a2721d10acf5614d6 (git)
Affected: e891db1a18bf11e02533ec2386b796cfd8d60666 , < 571b6bbbf54d835ea6120f65575cb55cd767e603 (git)
Affected: e891db1a18bf11e02533ec2386b796cfd8d60666 , < 25b78bf98b07ff5aceb9b1e24f72ec0236c5c053 (git)
Affected: e891db1a18bf11e02533ec2386b796cfd8d60666 , < 23393c6461422df5bf8084a086ada9a7e17dc2ba (git)
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    Linux Linux Affected: 5.1
Unaffected: 0 , < 5.1 (semver)
Unaffected: 5.4.226 , ≤ 5.4.* (semver)
Unaffected: 5.10.158 , ≤ 5.10.* (semver)
Unaffected: 5.15.82 , ≤ 5.15.* (semver)
Unaffected: 6.0.12 , ≤ 6.0.* (semver)
Unaffected: 6.1 , ≤ * (original_commit_for_fix)
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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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