Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: RDMA/uverbs: Prevent integer overflow issue In the expression "cmd.wqe_size * cmd.wr_count", both variables are u32 values that come from the user so the multiplication can lead to integer wrapping. Then we pass the result to uverbs_request_next_ptr() which also could potentially wrap. The "cmd.sge_count * sizeof(struct ib_uverbs_sge)" multiplication can also overflow on 32bit systems although it's fine on 64bit systems. This patch does two things. First, I've re-arranged the condition in uverbs_request_next_ptr() so that the use controlled variable "len" is on one side of the comparison by itself without any math. Then I've modified all the callers to use size_mul() for the multiplications.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 67cdb40ca444c09853ab4d8a41cf547ac26a4de4 before c57721b24bd897338a81a0ca5fff41600f0f1ad1; affected 67cdb40ca444c09853ab4d8a41cf547ac26a4de4 before 42a6eb4ed7a9a41ba0b83eb0c7e0225b5fca5608; affected 67cdb40ca444c09853ab4d8a41cf547ac26a4de4 before c2f961c46ea0e5274c5c320d007c2dd949cf627a; affected 67cdb40ca444c09853ab4d8a41cf547ac26a4de4 before 346db03e9926ab7117ed9bf19665699c037c773c; affected 67cdb40ca444c09853ab4d8a41cf547ac26a4de4 before b92667f755749cf10d9ef1088865c555ae83ffb7; affected 67cdb40ca444c09853ab4d8a41cf547ac26a4de4 before b3ef4ae713360501182695dd47d6b4f6e1a43eb8; affected 67cdb40ca444c09853ab4d8a41cf547ac26a4de4 before d0257e089d1bbd35c69b6c97ff73e3690ab149a9 |
| Linux / Linux | affected 2.6.15; unaffected 0 before 2.6.15; unaffected 5.4.289 through 5.4.*; unaffected 5.10.233 through 5.10.*; unaffected 5.15.176 through 5.15.*; unaffected 6.1.124 through 6.1.*; unaffected 6.6.70 through 6.6.*; unaffected 6.12.9 through 6.12.*; unaffected 6.13 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/c57721b24bd897338a81a0ca5fff41600f0f1ad1
- https://git.kernel.org/stable/c/42a6eb4ed7a9a41ba0b83eb0c7e0225b5fca5608
- https://git.kernel.org/stable/c/c2f961c46ea0e5274c5c320d007c2dd949cf627a
- https://git.kernel.org/stable/c/346db03e9926ab7117ed9bf19665699c037c773c
- https://git.kernel.org/stable/c/b92667f755749cf10d9ef1088865c555ae83ffb7
- https://git.kernel.org/stable/c/b3ef4ae713360501182695dd47d6b4f6e1a43eb8
- https://git.kernel.org/stable/c/d0257e089d1bbd35c69b6c97ff73e3690ab149a9
ADP enrichment
No English description supplied.
No references supplied.
No English description supplied.