CVE-2026-53363
- Source
- https://cve.org/CVERecord?id=CVE-2026-53363
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-53363.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2026-53363
- Downstream
- Published
- 2026-07-10T11:55:31Z
- Modified
- 2026-08-12T03:30:43Z
- Severity
-
- 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()
iptfs_consume_frags() transfers paged fragments from one socket buffer to another but fails to propagate the SKBFL_SHARED_FRAG flag. This is the same class of bug that was fixed in skb_try_coalesce() for CVE-2026-46300: when fragments backed by read-only page-cache pages are merged, the marker indicating their shared nature must be preserved so that ESP can decide correctly whether in-place encryption is safe.
Apply the same two-line fix used in skb_try_coalesce() to iptfs_consume_frags().
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53363.json" }- References
-
- https://git.kernel.org/stable/c/c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c
- https://git.kernel.org/stable/c/dd66f7f6e360ee82cd905517726f8e9091265de5
- https://git.kernel.org/stable/c/e9096a5a170e7ecd6467bc2e08668ec39897cda7
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53363.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-53363
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git