{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-90115","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2026-09-11T19:38:34.787Z","datePublished":"2026-09-17T16:06:21.376Z","dateUpdated":"2026-09-17T16:06:21.376Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2026-09-17T16:06:21.376Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nxsk: fix NULL pointer dereference in __xsk_rcv()\n\nIn the __xsk_rcv() multi-buffer path, xsk_buff_alloc() is called in a\nloop without checking its return value. xsk_buff_can_alloc() only\ncounts fill queue entries without validating their addresses, so it\ncan succeed while xsk_buff_alloc() rejects all remaining entries and\nreturns NULL.\n\n  Oops: general protection fault, probably for non-canonical address\n   0xdffffc0000000000\n  KASAN: null-ptr-deref in range\n   [0x0000000000000000-0x0000000000000007]\n  RIP: 0010:__xsk_rcv+0x426/0xc20 (net/xdp/xsk.c:350)\n  Call Trace:\n   xsk_generic_rcv+0x26d/0x5f0\n   xdp_do_generic_redirect+0x3c5/0xcf0\n   do_xdp_generic+0x92f/0xe70\n   __netif_receive_skb_core.constprop.0+0xf7e/0x2b30\n\nFix this with a two-stage transaction. First allocate and stage all\nbuffers required for the packet, recycling all staged buffers with\nxsk_buff_free() if any allocation fails. Only after this stage\nsucceeds, copy the data, reserve the RX descriptors, and release the\nbuffers in an error-free loop."}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/xdp/xsk.c"],"versions":[{"version":"804627751b4281dd95148e7564759145da67855e","lessThan":"aaebce297efc3e3dccb98a6ff838cfaa47db08db","status":"affected","versionType":"git"},{"version":"804627751b4281dd95148e7564759145da67855e","lessThan":"60d7d3559ce66e227e195e9463cdfed8077c8659","status":"affected","versionType":"git"},{"version":"804627751b4281dd95148e7564759145da67855e","lessThan":"214fb79b0379cb0214905632a2537c0c33f594eb","status":"affected","versionType":"git"},{"version":"804627751b4281dd95148e7564759145da67855e","lessThan":"8341bd3ff126d85bc8c4ed52eedcaa5b1a65f194","status":"affected","versionType":"git"},{"version":"804627751b4281dd95148e7564759145da67855e","lessThan":"e37b2abca80473e106176e41712a369fd2f72117","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/xdp/xsk.c"],"versions":[{"version":"6.6","status":"affected"},{"version":"0","lessThan":"6.6","status":"unaffected","versionType":"semver"},{"version":"6.6.157","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.12.110","lessThanOrEqual":"6.12.*","status":"unaffected","versionType":"semver"},{"version":"6.18.52","lessThanOrEqual":"6.18.*","status":"unaffected","versionType":"semver"},{"version":"7.2.6","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":"6.6","versionEndExcluding":"6.6.157"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.12.110"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"6.18.52"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.2.6"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.6","versionEndExcluding":"7.3-rc1"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/aaebce297efc3e3dccb98a6ff838cfaa47db08db"},{"url":"https://git.kernel.org/stable/c/60d7d3559ce66e227e195e9463cdfed8077c8659"},{"url":"https://git.kernel.org/stable/c/214fb79b0379cb0214905632a2537c0c33f594eb"},{"url":"https://git.kernel.org/stable/c/8341bd3ff126d85bc8c4ed52eedcaa5b1a65f194"},{"url":"https://git.kernel.org/stable/c/e37b2abca80473e106176e41712a369fd2f72117"}],"title":"xsk: fix NULL pointer dereference in __xsk_rcv()","x_generator":{"engine":"bippy-1.2.0"}}}}