CVE-2024-35968

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-35968
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-35968.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-35968
Related
Published
2024-05-20T10:15:11Z
Modified
2024-09-18T03:26:21.621083Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved:

pdscore: Fix pdsccheckpcihealth function to use work thread

When the driver notices fwstatus == 0xff it tries to perform a PCI reset on itself via pciresetfunction() in the context of the driver's health thread. However, pdscresetprepare calls pdscstophealththread(), which attempts to stop/flush the health thread. This results in a deadlock because the stop/flush will never complete since the driver called pciresetfunction() from the health thread context. Fix by changing the pdsccheckpcihealthfunction() to queue a newly introduced pdscpcireset_thread() on the pdsc's work queue.

Unloading the driver in the fw_down/dead state uncovered another issue, which can be seen in the following trace:

WARNING: CPU: 51 PID: 6914 at kernel/workqueue.c:1450 queuework+0x358/0x440 [...] RIP: 0010:queuework+0x358/0x440 [...] Call Trace: <TASK> ? _warn+0x85/0x140 ? _queuework+0x358/0x440 ? reportbug+0xfc/0x1e0 ? handlebug+0x3f/0x70 ? excinvalidop+0x17/0x70 ? asmexcinvalidop+0x1a/0x20 ? _queuework+0x358/0x440 queueworkon+0x28/0x30 pdscdevcmdlocked+0x96/0xe0 [pdscore] pdscdevcmdreset+0x71/0xb0 [pdscore] pdscteardown+0x51/0xe0 [pdscore] pdscremove+0x106/0x200 [pdscore] pcideviceremove+0x37/0xc0 devicereleasedriverinternal+0xae/0x140 driverdetach+0x48/0x90 busremovedriver+0x6d/0xf0 pciunregisterdriver+0x2e/0xa0 pdsccleanupmodule+0x10/0x780 [pdscore] _x64sysdeletemodule+0x142/0x2b0 ? syscalltraceenter.isra.18+0x126/0x1a0 dosyscall64+0x3b/0x90 entrySYSCALL64after_hwframe+0x72/0xdc RIP: 0033:0x7fbd9d03a14b [...]

Fix this by preventing the devcmd reset if the FW is not running.

References

Affected packages

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.8.9-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1
6.1.82-1
6.1.85-1
6.1.90-1~bpo11+1
6.1.90-1
6.1.94-1~bpo11+1
6.1.94-1
6.1.98-1
6.1.99-1
6.1.106-1
6.1.106-2
6.1.106-3
6.3.1-1~exp1
6.3.2-1~exp1
6.3.4-1~exp1
6.3.5-1~exp1
6.3.7-1~bpo12+1
6.3.7-1
6.3.11-1
6.4~rc6-1~exp1
6.4~rc7-1~exp1
6.4.1-1~exp1
6.4.4-1~bpo12+1
6.4.4-1
6.4.4-2
6.4.4-3~bpo12+1
6.4.4-3
6.4.11-1
6.4.13-1
6.5~rc4-1~exp1
6.5~rc6-1~exp1
6.5~rc7-1~exp1
6.5.1-1~exp1
6.5.3-1~bpo12+1
6.5.3-1
6.5.6-1
6.5.8-1
6.5.10-1~bpo12+1
6.5.10-1
6.5.13-1
6.6.3-1~exp1
6.6.4-1~exp1
6.6.7-1~exp1
6.6.8-1
6.6.9-1
6.6.11-1
6.6.13-1~bpo12+1
6.6.13-1
6.6.15-1
6.6.15-2
6.7-1~exp1
6.7.1-1~exp1
6.7.4-1~exp1
6.7.7-1
6.7.9-1
6.7.9-2
6.7.12-1~bpo12+1
6.7.12-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}