Information Exposure Affecting torvalds/linux package, versions [3.9,5.10.257)[5.11,5.15.208)[5.16,6.1.174)[6.2,6.6.141)[6.7,6.12.91)[6.13,6.18.33)[6.19,7.0.10)
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
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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Test your applications- Snyk IDSNYK-UNMANAGED-TORVALDSLINUX-20789175
- published10 Oct 2026
- disclosed23 May 2026
- creditUnknown
Introduced: 23 May 2026
CVE-2026-43503 (opens in a new tab)How to fix?
Upgrade torvalds/linux to version 5.10.257, 5.15.208, 6.1.174, 6.6.141, 6.12.91, 6.18.33, 7.0.10 or higher.
Overview
Affected versions of this package are vulnerable to Information Exposure in the skb_has_shared_frag process. An attacker can gain unauthorized access to sensitive information, corrupt the page cache of root-owned read-only files, escalate privileges, or cause system instability by crafting network packets that exploit improper propagation of shared fragment markers during fragment transfer operations.
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