{"api_version":"1","generated_at":"2026-06-25T11:33:14+00:00","cve":"CVE-2026-53235","urls":{"html":"https://cve.report/CVE-2026-53235","api":"https://cve.report/api/cve/CVE-2026-53235.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-53235","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-53235"},"summary":{"title":"net: add pskb_may_pull() to skb_gro_receive_list()","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add pskb_may_pull() to skb_gro_receive_list()\n\nskb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without\nfirst ensuring the data is in the linear area via pskb_may_pull(). When\nthe skb arrives via napi_gro_frags(), skb_headlen can be 0 (all data in\npage fragments) while skb_gro_offset is non-zero (after IP+TCP header\nparsing). The skb_pull() then decrements skb->len by skb_gro_offset\nbut skb->data_len stays unchanged, hitting BUG_ON(skb->len < skb->data_len)\nin __skb_pull().\n\nThe UDP fraglist GRO path already contains this guard at\nudp_offload.c:749. Adding it to skb_gro_receive_list() itself provides\ncentralized protection for all callers (TCP, UDP, and any future\nprotocols), and ensures the precondition of skb_pull() is satisfied\nbefore it is called.\n\nOn pskb_may_pull() failure, set NAPI_GRO_CB(skb)->flush = 1 so the\nskb is not held as a new GRO head and is instead delivered through the\nnormal receive path, matching the UDP handling.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-06-25 09:16:41","updated_at":"2026-06-25 09:16:41"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac","name":"https://git.kernel.org/stable/c/848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/9e636c995b7beeb74ea882968248752821c244c4","name":"https://git.kernel.org/stable/c/9e636c995b7beeb74ea882968248752821c244c4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/0cde3a004119db637b401c54e77536e4145fc0b4","name":"https://git.kernel.org/stable/c/0cde3a004119db637b401c54e77536e4145fc0b4","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f2bb3434544454099a5b6dec213567267b05d79d","name":"https://git.kernel.org/stable/c/f2bb3434544454099a5b6dec213567267b05d79d","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-53235","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53235","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8d95dc474f85481652a0e422d2f1f079de81f63c 9e636c995b7beeb74ea882968248752821c244c4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8d95dc474f85481652a0e422d2f1f079de81f63c 0cde3a004119db637b401c54e77536e4145fc0b4 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8d95dc474f85481652a0e422d2f1f079de81f63c 848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8d95dc474f85481652a0e422d2f1f079de81f63c f2bb3434544454099a5b6dec213567267b05d79d git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 6.10","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.10 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.94 6.12.* 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":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"Linux","programFiles":["net/core/gro.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"9e636c995b7beeb74ea882968248752821c244c4","status":"affected","version":"8d95dc474f85481652a0e422d2f1f079de81f63c","versionType":"git"},{"lessThan":"0cde3a004119db637b401c54e77536e4145fc0b4","status":"affected","version":"8d95dc474f85481652a0e422d2f1f079de81f63c","versionType":"git"},{"lessThan":"848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac","status":"affected","version":"8d95dc474f85481652a0e422d2f1f079de81f63c","versionType":"git"},{"lessThan":"f2bb3434544454099a5b6dec213567267b05d79d","status":"affected","version":"8d95dc474f85481652a0e422d2f1f079de81f63c","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["net/core/gro.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"6.10"},{"lessThan":"6.10","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.94","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":"6.12.94","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.36","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.0.13","versionStartIncluding":"6.10","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.1","versionStartIncluding":"6.10","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add pskb_may_pull() to skb_gro_receive_list()\n\nskb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without\nfirst ensuring the data is in the linear area via pskb_may_pull(). When\nthe skb arrives via napi_gro_frags(), skb_headlen can be 0 (all data in\npage fragments) while skb_gro_offset is non-zero (after IP+TCP header\nparsing). The skb_pull() then decrements skb->len by skb_gro_offset\nbut skb->data_len stays unchanged, hitting BUG_ON(skb->len < skb->data_len)\nin __skb_pull().\n\nThe UDP fraglist GRO path already contains this guard at\nudp_offload.c:749. Adding it to skb_gro_receive_list() itself provides\ncentralized protection for all callers (TCP, UDP, and any future\nprotocols), and ensures the precondition of skb_pull() is satisfied\nbefore it is called.\n\nOn pskb_may_pull() failure, set NAPI_GRO_CB(skb)->flush = 1 so the\nskb is not held as a new GRO head and is instead delivered through the\nnormal receive path, matching the UDP handling."}],"providerMetadata":{"dateUpdated":"2026-06-25T08:39:32.518Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/9e636c995b7beeb74ea882968248752821c244c4"},{"url":"https://git.kernel.org/stable/c/0cde3a004119db637b401c54e77536e4145fc0b4"},{"url":"https://git.kernel.org/stable/c/848571dcbbbea7ba44dd4f7ebe1fbb274afe08ac"},{"url":"https://git.kernel.org/stable/c/f2bb3434544454099a5b6dec213567267b05d79d"}],"title":"net: add pskb_may_pull() to skb_gro_receive_list()","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-53235","datePublished":"2026-06-25T08:39:32.518Z","dateReserved":"2026-06-09T07:44:35.393Z","dateUpdated":"2026-06-25T08:39:32.518Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-06-25 09:16:41","lastModifiedDate":"2026-06-25 09:16:41","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"53235","Ordinal":"1","Title":"net: add pskb_may_pull() to skb_gro_receive_list()","CVE":"CVE-2026-53235","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"53235","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: add pskb_may_pull() to skb_gro_receive_list()\n\nskb_gro_receive_list() calls skb_pull(skb, skb_gro_offset(skb)) without\nfirst ensuring the data is in the linear area via pskb_may_pull(). When\nthe skb arrives via napi_gro_frags(), skb_headlen can be 0 (all data in\npage fragments) while skb_gro_offset is non-zero (after IP+TCP header\nparsing). The skb_pull() then decrements skb->len by skb_gro_offset\nbut skb->data_len stays unchanged, hitting BUG_ON(skb->len < skb->data_len)\nin __skb_pull().\n\nThe UDP fraglist GRO path already contains this guard at\nudp_offload.c:749. Adding it to skb_gro_receive_list() itself provides\ncentralized protection for all callers (TCP, UDP, and any future\nprotocols), and ensures the precondition of skb_pull() is satisfied\nbefore it is called.\n\nOn pskb_may_pull() failure, set NAPI_GRO_CB(skb)->flush = 1 so the\nskb is not held as a new GRO head and is instead delivered through the\nnormal receive path, matching the UDP handling.","Type":"Description","Title":"net: add pskb_may_pull() to skb_gro_receive_list()"}]}}}