{"api_version":"1","generated_at":"2026-07-12T11:45:27+00:00","cve":"CVE-2026-53363","urls":{"html":"https://cve.report/CVE-2026-53363","api":"https://cve.report/api/cve/CVE-2026-53363.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53363","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53363"},"summary":{"title":"xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()\n\niptfs_consume_frags() transfers paged fragments from one socket buffer\nto another but fails to propagate the SKBFL_SHARED_FRAG flag. This is\nthe same class of bug that was fixed in skb_try_coalesce() for\nCVE-2026-46300: when fragments backed by read-only page-cache pages are\nmerged, the marker indicating their shared nature must be preserved so\nthat ESP can decide correctly whether in-place encryption is safe.\n\nApply the same two-line fix used in skb_try_coalesce() to\niptfs_consume_frags().","state":"PUBLISHED","assigner":"Linux","published_at":"2026-07-10 12:17:22","updated_at":"2026-07-10 12:17:22"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c","name":"https://git.kernel.org/stable/c/c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/e9096a5a170e7ecd6467bc2e08668ec39897cda7","name":"https://git.kernel.org/stable/c/e9096a5a170e7ecd6467bc2e08668ec39897cda7","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/dd66f7f6e360ee82cd905517726f8e9091265de5","name":"https://git.kernel.org/stable/c/dd66f7f6e360ee82cd905517726f8e9091265de5","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53363","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53363","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b96ba312e21c9b7ac1526829b9640ddc06695c0b dd66f7f6e360ee82cd905517726f8e9091265de5 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b96ba312e21c9b7ac1526829b9640ddc06695c0b c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected b96ba312e21c9b7ac1526829b9640ddc06695c0b e9096a5a170e7ecd6467bc2e08668ec39897cda7 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.14","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.14 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.36 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.0.13 7.0.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.1 * original_commit_for_fix","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2026","cve_id":"53363","cve":"CVE-2026-53363","epss":"0.001110000","percentile":"0.015590000","score_date":"2026-07-11","updated_at":"2026-07-12 00:00:51"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/xfrm/xfrm_iptfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"dd66f7f6e360ee82cd905517726f8e9091265de5","status":"affected","version":"b96ba312e21c9b7ac1526829b9640ddc06695c0b","versionType":"git"},{"lessThan":"c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c","status":"affected","version":"b96ba312e21c9b7ac1526829b9640ddc06695c0b","versionType":"git"},{"lessThan":"e9096a5a170e7ecd6467bc2e08668ec39897cda7","status":"affected","version":"b96ba312e21c9b7ac1526829b9640ddc06695c0b","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/xfrm/xfrm_iptfs.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.14"},{"lessThan":"6.14","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.36","versionType":"semver"},{"lessThanOrEqual":"7.0.*","status":"unaffected","version":"7.0.13","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.36","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.13","versionStartIncluding":"6.14","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.14","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()\n\niptfs_consume_frags() transfers paged fragments from one socket buffer\nto another but fails to propagate the SKBFL_SHARED_FRAG flag. This is\nthe same class of bug that was fixed in skb_try_coalesce() for\nCVE-2026-46300: when fragments backed by read-only page-cache pages are\nmerged, the marker indicating their shared nature must be preserved so\nthat ESP can decide correctly whether in-place encryption is safe.\n\nApply the same two-line fix used in skb_try_coalesce() to\niptfs_consume_frags()."}],"providerMetadata":{"dateUpdated":"2026-07-10T11:55:31.820Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/dd66f7f6e360ee82cd905517726f8e9091265de5"},{"url":"https://git.kernel.org/stable/c/c885d111ed9f5a0a1f3cc4e87a50db6518abaa6c"},{"url":"https://git.kernel.org/stable/c/e9096a5a170e7ecd6467bc2e08668ec39897cda7"}],"title":"xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53363","datePublished":"2026-07-10T11:55:31.820Z","dateReserved":"2026-06-09T07:44:35.400Z","dateUpdated":"2026-07-10T11:55:31.820Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-07-10 12:17:22","lastModifiedDate":"2026-07-10 12:17:22","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53363","Ordinal":"1","Title":"xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags(","CVE":"CVE-2026-53363","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53363","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nxfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags()\n\niptfs_consume_frags() transfers paged fragments from one socket buffer\nto another but fails to propagate the SKBFL_SHARED_FRAG flag. This is\nthe same class of bug that was fixed in skb_try_coalesce() for\nCVE-2026-46300: when fragments backed by read-only page-cache pages are\nmerged, the marker indicating their shared nature must be preserved so\nthat ESP can decide correctly whether in-place encryption is safe.\n\nApply the same two-line fix used in skb_try_coalesce() to\niptfs_consume_frags().","Type":"Description","Title":"xfrm: iptfs: preserve shared-frag marker in iptfs_consume_frags("}]}}}