CVE-2021-47353
N/A
N/A
Summary
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.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2f3d9ddd32a28803baa547e6274983b67d5e287c | affected |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 371566f63cbd0bb6fbb25b8fe9d5798268d35af9 | affected |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < baea588a42d675e35daeaddd10fbc9700550bc4d | affected |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3638705ecd5ad2785e996f820121c0ad15ce64b5 | affected |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 80d505aee6398cf8beb72475c7edcf1733c1c68b | affected |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 21bf1414580c36ffc8d8de043beb3508cf812238 | affected |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < aebed6b19e51a34003d998da5ebb1dfdd2cb1d02 | affected |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 5150877e4d99f85057a458daac7cd7c01005d5c6 | affected |
| Linux | Linux | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43 | affected |
| Linux | Linux | 2.6.12 | affected |
| Linux | Linux | 0 < 2.6.12 | unaffected |
| Linux | Linux | 4.4.276 <= 4.4.* | unaffected |
| Linux | Linux | 4.9.276 <= 4.9.* | unaffected |
| Linux | Linux | 4.14.240 <= 4.14.* | unaffected |
| Linux | Linux | 4.19.198 <= 4.19.* | unaffected |
| Linux | Linux | 5.4.133 <= 5.4.* | unaffected |
| Linux | Linux | 5.10.51 <= 5.10.* | unaffected |
| Linux | Linux | 5.12.18 <= 5.12.* | unaffected |
| Linux | Linux | 5.13.3 <= 5.13.* | unaffected |
| Linux | Linux | 5.14 <= * | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: partial
CVE Program Container
Additional References
- https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c
- https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9
- https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d
- https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5
- https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b
- https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238
- https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02
- https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6
- https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43
References
- https://git.kernel.org/stable/c/2f3d9ddd32a28803baa547e6274983b67d5e287c
- https://git.kernel.org/stable/c/371566f63cbd0bb6fbb25b8fe9d5798268d35af9
- https://git.kernel.org/stable/c/baea588a42d675e35daeaddd10fbc9700550bc4d
- https://git.kernel.org/stable/c/3638705ecd5ad2785e996f820121c0ad15ce64b5
- https://git.kernel.org/stable/c/80d505aee6398cf8beb72475c7edcf1733c1c68b
- https://git.kernel.org/stable/c/21bf1414580c36ffc8d8de043beb3508cf812238
- https://git.kernel.org/stable/c/aebed6b19e51a34003d998da5ebb1dfdd2cb1d02
- https://git.kernel.org/stable/c/5150877e4d99f85057a458daac7cd7c01005d5c6
- https://git.kernel.org/stable/c/fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43
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