vulnerability
Red Hat: CVE-2021-47353: kernel: udf: Fix NULL pointer dereference in udf_symlink function (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:L/AC:L/Au:S/C:N/I:N/A:C) | 05/21/2024 | 07/03/2024 | 07/09/2024 |
Severity
5
CVSS
(AV:L/AC:L/Au:S/C:N/I:N/A:C)
Published
05/21/2024
Added
07/03/2024
Modified
07/09/2024
Description
In the Linux kernel, the following vulnerability has been resolved:
udf: Fix NULL pointer dereference in udf_symlink function
In function udf_symlink, epos.bh is assigned with the value returned
by udf_tgetblk. The function udf_tgetblk is defined in udf/misc.c
and returns the value of sb_getblk function that could be NULL.
Then, epos.bh is used without any check, causing a possible
NULL pointer dereference when sb_getblk fails.
This fix adds a check to validate the value of epos.bh.
Solution(s)
redhat-upgrade-kernelredhat-upgrade-kernel-rt
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