{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-99057","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-25T10:25:14.388Z","datePublished":"2026-10-23T12:22:44.683Z","dateUpdated":"2026-10-30T12:41:23.425Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-10-30T12:41:23.425Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxen/netfront: don't leak the skb when xennet_fill_frags() fails\n\nWhen a response chain has more slots than fit in the skb's frags,\nxennet_fill_frags() returns an error and xennet_poll() jumps to its\nerror path.  That path moves what's left on tmpq to errq to be freed,\nbut the skb being filled was already dequeued from tmpq, so it's never\nfreed.  Each chain that overflows leaks the skb and the pages attached\nto it as frags, and the backend decides how many slots it sends.\n\nPut the skb back on tmpq before taking the error path, like the\nxennet_set_skb_gso() failure just above it does."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/xen-netfront.c"],"versions":[{"version":"ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c","lessThan":"6e6bd1051daabc327233c3ca3d00613fc6783c8e","status":"affected","versionType":"git"},{"version":"ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c","lessThan":"0cf0a25a639c535146c5eb4480d256995721aed6","status":"affected","versionType":"git"},{"version":"ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c","lessThan":"53a131eb2a998c77e2851401b32b712d6c6e8487","status":"affected","versionType":"git"},{"version":"ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c","lessThan":"5051df031144753d3e18862514969146b601d089","status":"affected","versionType":"git"},{"version":"ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c","lessThan":"99011a11c97340ef7290df7dc199305c73fab2f2","status":"affected","versionType":"git"},{"version":"ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c","lessThan":"086944c1c2cbb683543bc3ff08637847b03c8009","status":"affected","versionType":"git"},{"version":"ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c","lessThan":"84e3ea6502b5f14ce8d499d0b6e0e38386274cf0","status":"affected","versionType":"git"},{"version":"ad4f15dc2c70b1de5e0a64d27335962fbc9cf71c","lessThan":"93ccaf1c26e2133396173b76a071e59024daa622","status":"affected","versionType":"git"},{"version":"bd1468048aa3e2af865da92990539946d4483989","status":"affected","versionType":"git"},{"version":"29a6193c0d74390c004808441061ac1812cf6f51","status":"affected","versionType":"git"},{"version":"7eced4478f4ec6ff0a603ddfd6e24a5d3831fca7","status":"affected","versionType":"git"},{"version":"b73a161e9beff24bf1803ba393dff95a255268f9","status":"affected","versionType":"git"},{"version":"4.4.159","lessThan":"4.5","status":"affected","versionType":"semver"},{"version":"4.9.130","lessThan":"4.10","status":"affected","versionType":"semver"},{"version":"4.14.73","lessThan":"4.15","status":"affected","versionType":"semver"},{"version":"4.18.11","lessThan":"4.19","status":"affected","versionType":"semver"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/xen-netfront.c"],"versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"5.10.273","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.224","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.191","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.160","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.113","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.57","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.11","lessThanOrEqual":"7.2.*","status":"unaffected","versionType":"semver"},{"version":"7.3","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":"4.19","versionEndExcluding":"5.10.273"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.224"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.191"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.160"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.12.113"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.2.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"7.3"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.4.159"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.9.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.14.73"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.18.11"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/6e6bd1051daabc327233c3ca3d00613fc6783c8e"},{"url":"https://git.kernel.org/stable/c/0cf0a25a639c535146c5eb4480d256995721aed6"},{"url":"https://git.kernel.org/stable/c/53a131eb2a998c77e2851401b32b712d6c6e8487"},{"url":"https://git.kernel.org/stable/c/5051df031144753d3e18862514969146b601d089"},{"url":"https://git.kernel.org/stable/c/99011a11c97340ef7290df7dc199305c73fab2f2"},{"url":"https://git.kernel.org/stable/c/086944c1c2cbb683543bc3ff08637847b03c8009"},{"url":"https://git.kernel.org/stable/c/84e3ea6502b5f14ce8d499d0b6e0e38386274cf0"},{"url":"https://git.kernel.org/stable/c/93ccaf1c26e2133396173b76a071e59024daa622"}],"title":"xen/netfront: don't leak the skb when xennet_fill_frags() fails","x_generator":{"engine":"bippy-1.2.0"}}}}