Vulnerability · Published Oct 30, 2026 · Assigned by VulnCheck
CVE-2026-119601AFFLIB through 3.7.22 Heap Out-of-Bounds Write in af_get_page
Medium 6.1
In plain English
A medium-severity out-of-bounds write in AFFLIB from sshock. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.1% (higher than 2% of all known vulnerabilities).
Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.1%top 98.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
AFFLIB through 3.7.22 contains a heap out-of-bounds write vulnerability in af_get_page() that allows attackers to corrupt heap memory by supplying crafted AFF images with mismatched page and sector sizes. Attackers can set a page size larger than and not a multiple of the sector size, causing the sector zero-fill loop to write past the buffer and crash forensic tools.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | afflib | no fix listed | DEBIAN-CVE-2026-119601 |
| Debian:13 | afflib | no fix listed | DEBIAN-CVE-2026-119601 |
| Debian:14 | afflib | no fix listed | DEBIAN-CVE-2026-119601 |
| Ubuntu:22.04:LTS | afflib | no fix listed | UBUNTU-CVE-2026-119601 |
| Ubuntu:24.04:LTS | afflib | no fix listed | UBUNTU-CVE-2026-119601 |
| Ubuntu:26.04:LTS | afflib | no fix listed | UBUNTU-CVE-2026-119601 |
| Ubuntu:26.10 | afflib | no fix listed | UBUNTU-CVE-2026-119601 |
Affected products (as reported)
Weakness: CWE-787 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H
References
- https://github.com/sshock/AFFLIBv3/issues/61 issue-tracking
- https://github.com/sshock/AFFLIBv3/blob/v3.7.22/lib/afflib_pages.cpp#L309-L315 technical-description
- https://hackmd.io/@haindpwn/afflib-aff-get-page-sector-fill-oob-write third-party-advisory
- https://github.com/sshock/AFFLIBv3 product
- VulnCheck Advisory: AFFLIB through 3.7.22 Heap Out-of-Bounds Write in af_get_page third-party-advisory
- https://hackmd.io/@haindpwn/cve-2026-119601-afflib-aff-get-page-sector-fill-oob-write exploit