CVE-2021-47353
- Source
- https://cve.org/CVERecord?id=CVE-2021-47353
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47353.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2021-47353
- Downstream
- Related
- Published
- 2024-05-21T15:15:21.693Z
- Modified
- 2026-03-13T05:18:06.173365Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
udf: Fix NULL pointer dereference in udf_symlink function
In function udfsymlink, epos.bh is assigned with the value returned by udftgetblk. The function udftgetblk is defined in udf/misc.c and returns the value of sbgetblk 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.
- References
-
- https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c
- https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9
- https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43
- https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5
- https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6
- https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b
- https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02
- https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d
- https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238
Affected packages
Git /
Database specific
source
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-47353.json"
unresolved_ranges
[
{
"events": [
{
"introduced": "0"
},
{
"fixed": "4.4.276"
}
]
},
{
"events": [
{
"introduced": "4.5"
},
{
"fixed": "4.9.276"
}
]
},
{
"events": [
{
"introduced": "4.10"
},
{
"fixed": "4.14.240"
}
]
},
{
"events": [
{
"introduced": "4.15"
},
{
"fixed": "4.19.198"
}
]
},
{
"events": [
{
"introduced": "4.20"
},
{
"fixed": "5.4.133"
}
]
},
{
"events": [
{
"introduced": "5.5"
},
{
"fixed": "5.10.51"
}
]
},
{
"events": [
{
"introduced": "5.11"
},
{
"fixed": "5.12.18"
}
]
},
{
"events": [
{
"introduced": "5.13"
},
{
"fixed": "5.13.3"
}
]
}
]