uprobes: fix kernel info leak via "[uprobes]" vma
In the Linux kernel, the following vulnerability has been resolved: uprobes: fix kernel info leak via "[uprobes]" vma xol_add_vma() maps the uninitialized page allocated by __create_xol_area() into userspace. On some architectures (x86) this memory is readable even without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ, although this doesn't really matter, debugger can read this memory anyway.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
In the Linux kernel, the following vulnerability has been resolved: uprobes: fix kernel info leak via "[uprobes]" vma xol_add_vma() maps the uninitialized page allocated by __create_xol_area() into userspace. On some architectures (x86) this memory is readable even without VM_READ, VM_EXEC results in the same pgprot_t as VM_EXEC|VM_READ, although this doesn't really matter, debugger can read this memory anyway.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/21cb47db1ec9765f91304763a24565ddc22d2492
- https://git.kernel.org/stable/c/24141df5a8615790950deedd926a44ddf1dfd6d8
- https://git.kernel.org/stable/c/2aa45f43709ba2082917bd2973d02687075b6eee
- https://git.kernel.org/stable/c/34820304cc2cd1804ee1f8f3504ec77813d29c8e
- https://git.kernel.org/stable/c/5b981d8335e18aef7908a068529a3287258ff6d8
- https://git.kernel.org/stable/c/9634e8dc964a4adafa7e1535147abd7ec29441a6
- https://git.kernel.org/stable/c/f31f92107e5a8ecc8902705122c594e979a351fe
- https://git.kernel.org/stable/c/f561b48d633ac2e7d0d667020fc634a96ade33a0
- https://git.kernel.org/stable/c/fe5e9182d3e227476642ae2b312e2356c4d326a3
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/49xxx/CVE-2024-49975.json
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://lists.debian.org/debian-lts-announce/2025/03/msg00002.html
- https://nvd.nist.gov/vuln/detail/CVE-2024-49975