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
- 2026-07-10T11:55:31.820Z
- Modified
- 2026-07-24T03:37:30.769618542Z
- 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 iptfsconsumefrags()
iptfsconsumefrags() transfers paged fragments from one socket buffer to another but fails to propagate the SKBFLSHAREDFRAG flag. This is the same class of bug that was fixed in skbtrycoalesce() 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 skbtrycoalesce() to iptfsconsumefrags().
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53363.json", "cna_assigner": "Linux" }- 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