5.5

CVE-2022-49191

mxser: fix xmit_buf leak in activate when LSR == 0xff

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

mxser: fix xmit_buf leak in activate when LSR == 0xff

When LSR is 0xff in ->activate() (rather unlike), we return an error.
Provided ->shutdown() is not called when ->activate() fails, nothing
actually frees the buffer in this case.

Fix this by properly freeing the buffer in a designated label. We jump
there also from the "!info->type" if now too.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Linux ≫ Linux Kernel Version >= 2.6.33 < 4.9.311
Linux ≫ Linux Kernel Version >= 4.10 < 4.14.276
Linux ≫ Linux Kernel Version >= 4.15 < 4.19.238
Linux ≫ Linux Kernel Version >= 4.20 < 5.4.189
Linux ≫ Linux Kernel Version >= 5.5 < 5.10.110
Linux ≫ Linux Kernel Version >= 5.11 < 5.15.33
Linux ≫ Linux Kernel Version >= 5.16 < 5.16.19
Linux ≫ Linux Kernel Version >= 5.17 < 5.17.2
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Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 0.26% 0.172
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/125b7c929fc9b1e5eaa344bceb6367dfa6fd3f9d
Patch
https://git.kernel.org/stable/c/2cd05c38a27bee7fb42aa4d43174d68ac55dac0f
Patch
https://git.kernel.org/stable/c/376922045009f8ea2d20a8fa3475e95b47c41690
Patch
https://git.kernel.org/stable/c/685b6d16bf89595310b5d61394c9b97cc9505c7c
Patch
https://git.kernel.org/stable/c/6c9041b2f90c0eace73106f22350e1d2c98f5edc
Patch
https://git.kernel.org/stable/c/6dffc2035fbaada60ca8db59e0962e34f760370a
Patch
https://git.kernel.org/stable/c/996291d06851a26678a0fab488b6e1f0677c0576
Patch
https://git.kernel.org/stable/c/b125b08dbee3611f03f53b71471813ed4ccafcdd
Patch
https://git.kernel.org/stable/c/cd3a4907ee334b40d7aa880c7ab310b154fd5cd4
Patch