{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-46300","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-05-13T15:03:33.111Z","datePublished":"2026-05-23T11:44:02.231Z","dateUpdated":"2026-06-14T18:07:34.359Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-06-14T18:07:34.359Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: skbuff: preserve shared-frag marker during coalescing\n\nskb_try_coalesce() can attach paged frags from @from to @to.  If @from\nhas SKBFL_SHARED_FRAG set, the resulting @to skb can contain the same\nexternally-owned or page-cache-backed frags, but the shared-frag marker\nis currently lost.\n\nThat breaks the invariant relied on by later in-place writers.  In\nparticular, ESP input checks skb_has_shared_frag() before deciding\nwhether an uncloned nonlinear skb can skip skb_cow_data().  If TCP\nreceive coalescing has moved shared frags into an unmarked skb, ESP can\nsee skb_has_shared_frag() as false and decrypt in place over page-cache\nbacked frags.\n\nPropagate SKBFL_SHARED_FRAG when skb_try_coalesce() transfers paged\nfrags.  The tailroom copy path does not need the marker because it copies\nbytes into @to's linear data rather than transferring frag descriptors."}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","baseScore":7.8,"baseSeverity":"HIGH"}}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/skbuff.c"],"versions":[{"version":"cef401de7be8c4e155c6746bfccf721a4fa5fab9","lessThan":"3599e6b3cc1ada96883d496a50a210d3afbb6987","status":"affected","versionType":"git"},{"version":"cef401de7be8c4e155c6746bfccf721a4fa5fab9","lessThan":"2f2b16022a2e10ca7bccfb98db5ed2ec0f72641c","status":"affected","versionType":"git"},{"version":"cef401de7be8c4e155c6746bfccf721a4fa5fab9","lessThan":"9d3e5fd19fe1063bf607219e8562fbd567b8e8d5","status":"affected","versionType":"git"},{"version":"cef401de7be8c4e155c6746bfccf721a4fa5fab9","lessThan":"78bf6b6bb19541d19fbda6242e7cfe2c682763c0","status":"affected","versionType":"git"},{"version":"cef401de7be8c4e155c6746bfccf721a4fa5fab9","lessThan":"760e1addc27ba1a7beb4a0a7e8b3e9ec49e7a34e","status":"affected","versionType":"git"},{"version":"cef401de7be8c4e155c6746bfccf721a4fa5fab9","lessThan":"3bd9e113d50034db99d7ef69fd8e5242d15e414a","status":"affected","versionType":"git"},{"version":"cef401de7be8c4e155c6746bfccf721a4fa5fab9","lessThan":"3884358a9286b17f389a72b1426fc4547c23c111","status":"affected","versionType":"git"},{"version":"cef401de7be8c4e155c6746bfccf721a4fa5fab9","lessThan":"f84eca5817390257cef78013d0112481c503b4a3","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/core/skbuff.c"],"versions":[{"version":"3.9","status":"affected"},{"version":"0","lessThan":"3.9","status":"unaffected","versionType":"semver"},{"version":"5.10.257","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.208","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.174","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.141","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.91","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.33","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.0.10","lessThanOrEqual":"7.0.*","status":"unaffected","versionType":"semver"},{"version":"7.1","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.10.257"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"5.15.208"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.1.174"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.6.141"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.12.91"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"6.18.33"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.0.10"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"3.9","versionEndExcluding":"7.1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/3599e6b3cc1ada96883d496a50a210d3afbb6987"},{"url":"https://git.kernel.org/stable/c/2f2b16022a2e10ca7bccfb98db5ed2ec0f72641c"},{"url":"https://git.kernel.org/stable/c/9d3e5fd19fe1063bf607219e8562fbd567b8e8d5"},{"url":"https://git.kernel.org/stable/c/78bf6b6bb19541d19fbda6242e7cfe2c682763c0"},{"url":"https://git.kernel.org/stable/c/760e1addc27ba1a7beb4a0a7e8b3e9ec49e7a34e"},{"url":"https://git.kernel.org/stable/c/3bd9e113d50034db99d7ef69fd8e5242d15e414a"},{"url":"https://git.kernel.org/stable/c/3884358a9286b17f389a72b1426fc4547c23c111"},{"url":"https://git.kernel.org/stable/c/f84eca5817390257cef78013d0112481c503b4a3"}],"title":"net: skbuff: preserve shared-frag marker during coalescing","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/05/13/5"},{"url":"http://www.openwall.com/lists/oss-security/2026/05/21/11"},{"url":"http://www.openwall.com/lists/oss-security/2026/05/21/12"},{"url":"http://www.openwall.com/lists/oss-security/2026/05/21/13"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-05-23T12:24:19.703Z"}}]}}