DEBIAN-CVE-2024-26785
- Source
- https://security-tracker.debian.org/tracker/CVE-2024-26785
- Import Source
- https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2024-26785.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2024-26785
- Upstream
- Published
- 2024-04-04T09:15:08.187Z
- Modified
- 2025-11-14T04:01:23.437371Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- [none]
- Details
-
In the Linux kernel, the following vulnerability has been resolved: iommufd: Fix protection fault in iommufdtestsyzconviova Syzkaller reported the following bug: general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] SMP KASAN KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7] Call Trace: lockacquire lockacquire+0x1ce/0x4f0 downread+0x93/0x4a0 iommufdtestsyzconviova+0x56/0x1f0 iommufdtestaccessrw.isra.0+0x2ec/0x390 iommufdtest+0x1058/0x1e30 iommufdfopsioctl+0x381/0x510 vfsioctl _dosysioctl _sesysioctl _x64sysioctl+0x170/0x1e0 dosyscallx64 dosyscall64+0x71/0x140 This is because the new iommufdaccesschangeioas() sets access->ioas to NULL during its process, so the lock might be gone in a concurrent racing context. Fix this by doing the same access->ioas sanity as iommufdaccessrw() and iommufdaccesspin_pages() functions do.
- References
Affected packages
Debian:13 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source
Debian:14 / linux
Package
- Name
- linux
- Purl
- pkg:deb/debian/linux?arch=source