NULL Pointer Dereference Affecting torvalds/linux package, versions [2.6.12,5.15.189)[5.16,6.1.107)[6.2,6.6.47)[6.7,6.10.6)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published9 Oct 2026
- disclosed26 Aug 2024
- creditUnknown
Introduced: 26 Aug 2024
CVE-2024-44939 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 5.15.189, 6.1.107, 6.6.47, 6.10.6 or higher.
Overview
Affected versions of this package are vulnerable to NULL Pointer Dereference in the dtInsertEntry function. An attacker can cause kernel memory corruption and potential information disclosure or denial of service by creating a specially crafted JFS directory page with manipulated header fields and triggering directory-modifying syscalls on a mounted malicious JFS volume. This is only exploitable if an attacker has write access to a directory on a mounted, attacker-controlled JFS filesystem.
Note: The Linux kernel project assigns a CVE to every bug fix it ships, whether or not the bug has been shown to be exploitable. This advisory was generated from that process and has not been individually assessed for exploitability. See the kernel's CVE process documentation: https://github.com/torvalds/linux/blob/master/Documentation/process/cve.rst