CVE-2022-50567
fs: jfs: fix shift-out-of-bounds in dbAllocAG
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
In the Linux kernel, the following vulnerability has been resolved: fs: jfs: fix shift-out-of-bounds in dbAllocAG Syzbot found a crash : UBSAN: shift-out-of-bounds in dbAllocAG. The underlying bug is the missing check of bmp->db_agl2size. The field can be greater than 64 and trigger the shift-out-of-bounds. Fix this bug by adding a check of bmp->db_agl2size in dbMount since this field is used in many following functions. The upper bound for this field is L2MAXL2SIZE - L2MAXAG, thanks for the help of Dave Kleikamp. Note that, for maintenance, I reorganized error handling code of dbMount.
| Vendor | linux |
| Product | linux |
| Ecosystems | |
| Industries | Technology |
| Published | Oct 22, 2025 |
| Last Updated | May 11, 2026 |
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Affected Versions
Linux / Linux
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < d3b486946a4e62c7ef6023f7d9c1d049051384ba 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3115313cf03113e87c87adee18ee49a20bbdb9ba 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < eea87acb6027be3dd4d3c57186bb22800d57fdda 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 359616ce587e524107730504891afa4b1a8be58c 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 3e997e4ce8ae7ab89d72334120f6aee49c5bbdbd 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 0536f76a2bca83d1a3740517ba22cc93a44b3099 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 2c575c8905f7a8b32d5611b91856b69bac2a5bf1 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 67973caae78e21ee46a7281aaa8ca364eb9c444f 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 898f706695682b9954f280d95e49fa86ffa55d08
Linux / Linux
2.6.12
References
git.kernel.org: https://git.kernel.org/stable/c/d3b486946a4e62c7ef6023f7d9c1d049051384ba git.kernel.org: https://git.kernel.org/stable/c/3115313cf03113e87c87adee18ee49a20bbdb9ba git.kernel.org: https://git.kernel.org/stable/c/eea87acb6027be3dd4d3c57186bb22800d57fdda git.kernel.org: https://git.kernel.org/stable/c/359616ce587e524107730504891afa4b1a8be58c git.kernel.org: https://git.kernel.org/stable/c/3e997e4ce8ae7ab89d72334120f6aee49c5bbdbd git.kernel.org: https://git.kernel.org/stable/c/0536f76a2bca83d1a3740517ba22cc93a44b3099 git.kernel.org: https://git.kernel.org/stable/c/2c575c8905f7a8b32d5611b91856b69bac2a5bf1 git.kernel.org: https://git.kernel.org/stable/c/67973caae78e21ee46a7281aaa8ca364eb9c444f git.kernel.org: https://git.kernel.org/stable/c/898f706695682b9954f280d95e49fa86ffa55d08