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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 2f3d9ddd32a28803baa547e6274983b67d5e287caffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 371566f63cbd0bb6fbb25b8fe9d5798268d35af9affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < baea588a42d675e35daeaddd10fbc9700550bc4daffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 3638705ecd5ad2785e996f820121c0ad15ce64b5affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 80d505aee6398cf8beb72475c7edcf1733c1c68baffected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 21bf1414580c36ffc8d8de043beb3508cf812238affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < aebed6b19e51a34003d998da5ebb1dfdd2cb1d02affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < 5150877e4d99f85057a458daac7cd7c01005d5c6affected1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to < fa236c2b2d4436d9f19ee4e5d5924e90ffd7bb43affected
Linux Linux
Default version status: affected
2.6.12affected0 to < 2.6.12unaffected4.4.276 to ≤ 4.4.*unaffected4.9.276 to ≤ 4.9.*unaffected4.14.240 to ≤ 4.14.*unaffected4.19.198 to ≤ 4.19.*unaffected5.4.133 to ≤ 5.4.*unaffected5.10.51 to ≤ 5.10.*unaffected5.12.18 to ≤ 5.12.*unaffected5.13.3 to ≤ 5.13.*unaffected5.14 to ≤ *unaffected
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 ↗