5.5

CVE-2024-39292

um: Add winch to winch_handlers before registering winch IRQ

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

um: Add winch to winch_handlers before registering winch IRQ

Registering a winch IRQ is racy, an interrupt may occur before the winch is
added to the winch_handlers list.

If that happens, register_winch_irq() adds to that list a winch that is
scheduled to be (or has already been) freed, causing a panic later in
winch_cleanup().

Avoid the race by adding the winch to the winch_handlers list before
registering the IRQ, and rolling back if um_request_irq() fails.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version < 2.6.23
Linux ≫ Linux Kernel Version >= 4.19 < 4.19.316
Linux ≫ Linux Kernel Version >= 5.4 < 5.4.278
Linux ≫ Linux Kernel Version >= 5.10 < 5.10.219
Linux ≫ Linux Kernel Version >= 5.15 < 5.15.161
Linux ≫ Linux Kernel Version >= 6.1 < 6.1.93
Linux ≫ Linux Kernel Version >= 6.6 < 6.6.33
Linux ≫ Linux Kernel Version >= 6.9 < 6.9.4
Linux ≫ Linux Kernel Version6.10.0 Updaterc1
VulnDex Vulnerability Enrichment
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.23% 0.139
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 5.5 1.8 3.6
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CWE-415 Double Free

The product calls free() twice on the same memory address.

https://lists.debian.org/debian-lts-announce/2024/06/msg00020.html
https://git.kernel.org/stable/c/0c02d425a2fbe52643a5859a779db0329e7dddd4
Patch
Mailing List
https://git.kernel.org/stable/c/31960d991e43c8d6dc07245f19fc13398e90ead2
Patch
Mailing List
https://git.kernel.org/stable/c/351d1a64544944b44732f6a64ed65573b00b9e14
Patch
Mailing List
https://git.kernel.org/stable/c/434a06c38ee1217a8baa0dd7c37cc85d50138fb0
Patch
Mailing List
https://git.kernel.org/stable/c/66ea9a7c6824821476914bed21a476cd20094f33
Patch
Mailing List
https://git.kernel.org/stable/c/73b8e21f76c7dda4905655d2e2c17dc5a73b87f1
Patch
Mailing List
https://git.kernel.org/stable/c/a0fbbd36c156b9f7b2276871d499c9943dfe5101
Patch
Mailing List
https://git.kernel.org/stable/c/dc1ff95602ee908fcd7d8acee7a0dadb61b1a0c0
Patch
Mailing List