5.5

CVE-2024-35831

io_uring: Fix release of pinned pages when __io_uaddr_map fails

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

io_uring: Fix release of pinned pages when __io_uaddr_map fails

Looking at the error path of __io_uaddr_map, if we fail after pinning
the pages for any reasons, ret will be set to -EINVAL and the error
handler won't properly release the pinned pages.

I didn't manage to trigger it without forcing a failure, but it can
happen in real life when memory is heavily fragmented.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 6.5.7 < 6.6
Linux ≫ Linux Kernel Version >= 6.6.1 < 6.6.23
Linux ≫ Linux Kernel Version >= 6.7 < 6.7.11
Linux ≫ Linux Kernel Version >= 6.8 < 6.8.2
Linux ≫ Linux Kernel Version6.6 Update-
Linux ≫ Linux Kernel Version6.6 Updaterc5
Linux ≫ Linux Kernel Version6.6 Updaterc6
Linux ≫ Linux Kernel Version6.6 Updaterc7
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.21% 0.107
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-401 Missing Release of Memory after Effective Lifetime

The product does not sufficiently track and release allocated memory after it has been used, making the memory unavailable for reallocation and reuse.

https://git.kernel.org/stable/c/0b6f39c175ba5f0ef72bdb3b9d2a06ad78621d62
Patch
https://git.kernel.org/stable/c/4d376d7ad62b6a8e8dfff56b559d9d275e5b9b3a
Patch
https://git.kernel.org/stable/c/67d1189d1095d471ed7fa426c7e384a7140a5dd7
Patch
https://git.kernel.org/stable/c/712e2c8415f55a4a4ddaa98a430b87f624109f69
Patch