{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80862","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-08-26T14:34:25.798Z","datePublished":"2026-09-04T15:55:16.653Z","dateUpdated":"2026-09-04T15:55:16.653Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-04T15:55:16.653Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnvme-tcp: fix usage of page_frag_cache\n\nnvme uses page_frag_cache to preallocate PDU for each preallocated request\nof block device. Block devices are created in parallel threads,\nconsequently page_frag_cache is used in not thread-safe manner.\nThat leads to incorrect refcounting of backstore pages and premature free.\n\nThat can be catched by !sendpage_ok inside network stack:\n\nWARNING: CPU: 7 PID: 467 at ../net/core/skbuff.c:6931 skb_splice_from_iter+0xfa/0x310.\n\ttcp_sendmsg_locked+0x782/0xce0\n\ttcp_sendmsg+0x27/0x40\n\tsock_sendmsg+0x8b/0xa0\n\tnvme_tcp_try_send_cmd_pdu+0x149/0x2a0\nThen random panic may occur.\n\nFix that by serializing the usage of page_frag_cache."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/nvme/host/tcp.c"],"versions":[{"version":"4e893ca8117022de68ce1b61c0309e3d17bb8a25","lessThan":"d19f98c79f1b7e09e4cdf5c20d626e571e487467","status":"affected","versionType":"git"},{"version":"4e893ca8117022de68ce1b61c0309e3d17bb8a25","lessThan":"64561afb42d8390695bf810d9bbd087cbca00291","status":"affected","versionType":"git"},{"version":"4e893ca8117022de68ce1b61c0309e3d17bb8a25","lessThan":"0a9750263ffacbbd2048a391fd4bd22e2146c57d","status":"affected","versionType":"git"},{"version":"4e893ca8117022de68ce1b61c0309e3d17bb8a25","lessThan":"6e4cf281558709b92ec2ca3054fe2ffc69266ef9","status":"affected","versionType":"git"},{"version":"4e893ca8117022de68ce1b61c0309e3d17bb8a25","lessThan":"36ac05f7cfd59d90c597071304b14e98090d5dd1","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/nvme/host/tcp.c"],"versions":[{"version":"6.12","status":"affected"},{"version":"0","lessThan":"6.12","status":"unaffected","versionType":"semver"},{"version":"6.12.108","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.49","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.1.13","lessThanOrEqual":"7.1.*","status":"unaffected","versionType":"semver"},{"version":"7.2.3","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3-rc1","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":"6.12","versionEndExcluding":"6.12.108"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"6.18.49"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"7.1.13"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"7.2.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.12","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/d19f98c79f1b7e09e4cdf5c20d626e571e487467"},{"url":"https://git.kernel.org/stable/c/64561afb42d8390695bf810d9bbd087cbca00291"},{"url":"https://git.kernel.org/stable/c/0a9750263ffacbbd2048a391fd4bd22e2146c57d"},{"url":"https://git.kernel.org/stable/c/6e4cf281558709b92ec2ca3054fe2ffc69266ef9"},{"url":"https://git.kernel.org/stable/c/36ac05f7cfd59d90c597071304b14e98090d5dd1"}],"title":"nvme-tcp: fix usage of page_frag_cache","x_generator":{"engine":"bippy-1.2.0"}}}}