iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index()
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.1.129, 6.6.76, 6.12.13, 6.13.2
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
In the Linux kernel, the following vulnerability has been resolved: iommufd/iova_bitmap: Fix shift-out-of-bounds in iova_bitmap_offset_to_index() Resolve a UBSAN shift-out-of-bounds issue in iova_bitmap_offset_to_index() where shifting the constant "1" (of type int) by bitmap->mapped.pgshift (an unsigned long value) could result in undefined behavior. The constant "1" defaults to a 32-bit "int", and when "pgshift" exceeds 31 (e.g., pgshift = 63) the shift operation overflows, as the result cannot be represented in a 32-bit type. To resolve this, the constant is updated to "1UL", promoting it to an unsigned long type to match the operand's type.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 · fixed in 44d9c94b7a3f29a3e07c4753603a35e9b28842a3; From 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 · fixed in 38ac76fc06bc6826a3e4b12a98efbe98432380a9; From 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 · fixed in d5d33f01b86af44b23eea61ee309e4ef22c0cdfe; From 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 · fixed in b1f8453b8ff1ab79a03820ef608256c499769cb6; From 58ccf0190d19d9a8a41f8a02b9e06742b58df4a1 · fixed in e24c1551059268b37f6f40639883eafb281b8b9c
- Linux Linux
6.1
- KernelLinux
From 6.1.0 · fixed in 6.1.129; From 6.2.0 · fixed in 6.6.76; From 6.7.0 · fixed in 6.12.13; From 6.13.0 · fixed in 6.13.2