ghsa-vch3-xc23-jrf2
Vulnerability from github
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]
{
"affected": [],
"aliases": [
"CVE-2022-48997"
],
"database_specific": {
"cwe_ids": [],
"github_reviewed": false,
"github_reviewed_at": null,
"nvd_published_at": "2024-10-21T20:15:11Z",
"severity": "MODERATE"
},
"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\u0027s\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]",
"id": "GHSA-vch3-xc23-jrf2",
"modified": "2024-11-07T18:31:21Z",
"published": "2024-10-21T21:30:52Z",
"references": [
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2022-48997"
},
{
"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"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
}
]
}
Sightings
| Author | Source | Type | Date |
|---|
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