{"api_version":"1","generated_at":"2026-09-11T23:53:32+00:00","cve":"CVE-2026-89511","urls":{"html":"https://cve.report/CVE-2026-89511","api":"https://cve.report/api/cve/CVE-2026-89511.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-89511","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-89511"},"summary":{"title":"qede: Fix NULL pointer dereference in TPA fragment processing","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nqede: Fix NULL pointer dereference in TPA fragment processing\n\nUnder memory pressure, the qede driver encounters NULL pointer\ndereferences when processing TPA continuation fragments.\n\nCommit 8a8633978b84 (\"qede: Add build_skb() support.\") accidentally\ndropped the assignment of tpa_info->buffer.data in qede_tpa_start().\n\nWhen memory pressure causes an SKB allocation failure in qede_tpa_start(),\nthe driver sets tpa_start_fail = true and attempts to recycle the physical\npage later in qede_tpa_end() via qede_reuse_page(). However, because\nbuffer.data was left uninitialized (NULL), qede_reuse_page() pushes a\n\"ghost\" BD (valid DMA mapping but NULL data pointer) back into the\nactive Rx ring.\n\nThe next time the hardware uses this ring slot, it passes a NULL page\nto qede_fill_frag_skb(), causing a kernel panic.\n\nExample crash from production system:\n BUG: unable to handle kernel NULL pointer dereference at 0x8\n RIP: qede_fill_frag_skb+0x96/0x430 [qede]\n Call Trace:\n   qede_rx_int+0xb06/0x1de0\n   qede_poll+0x2f4/0x6c0\n   __napi_poll+0x2d/0x130\n\nFix the root cause by restoring the tpa_info->buffer.data assignment\nin qede_tpa_start(), ensuring valid pages are correctly tracked and\nrecycled. Additionally, update the stale comment for\nstruct qede_agg_info::buffer to reflect its current usage.","state":"PUBLISHED","assigner":"Linux","published_at":"2026-09-11 20:19:33","updated_at":"2026-09-11 20:19:33"},"problem_types":[],"metrics":[],"references":[{"url":"https://git.kernel.org/stable/c/2a952fb1b20d83e83ca852773e6188511f7d2191","name":"https://git.kernel.org/stable/c/2a952fb1b20d83e83ca852773e6188511f7d2191","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/7f911e208b3ca2c76d9f2bbba1f54b9403568c10","name":"https://git.kernel.org/stable/c/7f911e208b3ca2c76d9f2bbba1f54b9403568c10","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/f5c8619ccbd70102642120c4c6fda1c048a555fd","name":"https://git.kernel.org/stable/c/f5c8619ccbd70102642120c4c6fda1c048a555fd","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://git.kernel.org/stable/c/06aa3d26327f24edd039ff249672fdf6f2ba5695","name":"https://git.kernel.org/stable/c/06aa3d26327f24edd039ff249672fdf6f2ba5695","refsource":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-89511","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89511","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8a8633978b842c88fbcfe00d4e5dde96048f630e 7f911e208b3ca2c76d9f2bbba1f54b9403568c10 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8a8633978b842c88fbcfe00d4e5dde96048f630e 2a952fb1b20d83e83ca852773e6188511f7d2191 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8a8633978b842c88fbcfe00d4e5dde96048f630e f5c8619ccbd70102642120c4c6fda1c048a555fd git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 8a8633978b842c88fbcfe00d4e5dde96048f630e 06aa3d26327f24edd039ff249672fdf6f2ba5695 git","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"affected 4.18","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 4.18 semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.12.109 6.12.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 6.18.50 6.18.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.2.4 7.2.* semver","platforms":[]},{"source":"CNA","vendor":"Linux","product":"Linux","version":"unaffected 7.3-rc1 * 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":["drivers/net/ethernet/qlogic/qede/qede.h","drivers/net/ethernet/qlogic/qede/qede_fp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"lessThan":"7f911e208b3ca2c76d9f2bbba1f54b9403568c10","status":"affected","version":"8a8633978b842c88fbcfe00d4e5dde96048f630e","versionType":"git"},{"lessThan":"2a952fb1b20d83e83ca852773e6188511f7d2191","status":"affected","version":"8a8633978b842c88fbcfe00d4e5dde96048f630e","versionType":"git"},{"lessThan":"f5c8619ccbd70102642120c4c6fda1c048a555fd","status":"affected","version":"8a8633978b842c88fbcfe00d4e5dde96048f630e","versionType":"git"},{"lessThan":"06aa3d26327f24edd039ff249672fdf6f2ba5695","status":"affected","version":"8a8633978b842c88fbcfe00d4e5dde96048f630e","versionType":"git"}]},{"defaultStatus":"affected","product":"Linux","programFiles":["drivers/net/ethernet/qlogic/qede/qede.h","drivers/net/ethernet/qlogic/qede/qede_fp.c"],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","vendor":"Linux","versions":[{"status":"affected","version":"4.18"},{"lessThan":"4.18","status":"unaffected","version":"0","versionType":"semver"},{"lessThanOrEqual":"6.12.*","status":"unaffected","version":"6.12.109","versionType":"semver"},{"lessThanOrEqual":"6.18.*","status":"unaffected","version":"6.18.50","versionType":"semver"},{"lessThanOrEqual":"7.2.*","status":"unaffected","version":"7.2.4","versionType":"semver"},{"lessThanOrEqual":"*","status":"unaffected","version":"7.3-rc1","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.12.109","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"6.18.50","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.2.4","versionStartIncluding":"4.18","vulnerable":true},{"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndExcluding":"7.3-rc1","versionStartIncluding":"4.18","vulnerable":true}],"negate":false,"operator":"OR"}]}],"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nqede: Fix NULL pointer dereference in TPA fragment processing\n\nUnder memory pressure, the qede driver encounters NULL pointer\ndereferences when processing TPA continuation fragments.\n\nCommit 8a8633978b84 (\"qede: Add build_skb() support.\") accidentally\ndropped the assignment of tpa_info->buffer.data in qede_tpa_start().\n\nWhen memory pressure causes an SKB allocation failure in qede_tpa_start(),\nthe driver sets tpa_start_fail = true and attempts to recycle the physical\npage later in qede_tpa_end() via qede_reuse_page(). However, because\nbuffer.data was left uninitialized (NULL), qede_reuse_page() pushes a\n\"ghost\" BD (valid DMA mapping but NULL data pointer) back into the\nactive Rx ring.\n\nThe next time the hardware uses this ring slot, it passes a NULL page\nto qede_fill_frag_skb(), causing a kernel panic.\n\nExample crash from production system:\n BUG: unable to handle kernel NULL pointer dereference at 0x8\n RIP: qede_fill_frag_skb+0x96/0x430 [qede]\n Call Trace:\n   qede_rx_int+0xb06/0x1de0\n   qede_poll+0x2f4/0x6c0\n   __napi_poll+0x2d/0x130\n\nFix the root cause by restoring the tpa_info->buffer.data assignment\nin qede_tpa_start(), ensuring valid pages are correctly tracked and\nrecycled. Additionally, update the stale comment for\nstruct qede_agg_info::buffer to reflect its current usage."}],"providerMetadata":{"dateUpdated":"2026-09-11T19:43:56.640Z","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux"},"references":[{"url":"https://git.kernel.org/stable/c/7f911e208b3ca2c76d9f2bbba1f54b9403568c10"},{"url":"https://git.kernel.org/stable/c/2a952fb1b20d83e83ca852773e6188511f7d2191"},{"url":"https://git.kernel.org/stable/c/f5c8619ccbd70102642120c4c6fda1c048a555fd"},{"url":"https://git.kernel.org/stable/c/06aa3d26327f24edd039ff249672fdf6f2ba5695"}],"title":"qede: Fix NULL pointer dereference in TPA fragment processing","x_generator":{"engine":"bippy-1.2.0"}}},"cveMetadata":{"assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","assignerShortName":"Linux","cveId":"CVE-2026-89511","datePublished":"2026-09-11T19:43:56.640Z","dateReserved":"2026-09-11T19:38:34.716Z","dateUpdated":"2026-09-11T19:43:56.640Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-09-11 20:19:33","lastModifiedDate":"2026-09-11 20:19:33","problem_types":[],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"89511","Ordinal":"1","Title":"qede: Fix NULL pointer dereference in TPA fragment processing","CVE":"CVE-2026-89511","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"89511","Ordinal":"1","NoteData":"In the Linux kernel, the following vulnerability has been resolved:\n\nqede: Fix NULL pointer dereference in TPA fragment processing\n\nUnder memory pressure, the qede driver encounters NULL pointer\ndereferences when processing TPA continuation fragments.\n\nCommit 8a8633978b84 (\"qede: Add build_skb() support.\") accidentally\ndropped the assignment of tpa_info->buffer.data in qede_tpa_start().\n\nWhen memory pressure causes an SKB allocation failure in qede_tpa_start(),\nthe driver sets tpa_start_fail = true and attempts to recycle the physical\npage later in qede_tpa_end() via qede_reuse_page(). However, because\nbuffer.data was left uninitialized (NULL), qede_reuse_page() pushes a\n\"ghost\" BD (valid DMA mapping but NULL data pointer) back into the\nactive Rx ring.\n\nThe next time the hardware uses this ring slot, it passes a NULL page\nto qede_fill_frag_skb(), causing a kernel panic.\n\nExample crash from production system:\n BUG: unable to handle kernel NULL pointer dereference at 0x8\n RIP: qede_fill_frag_skb+0x96/0x430 [qede]\n Call Trace:\n   qede_rx_int+0xb06/0x1de0\n   qede_poll+0x2f4/0x6c0\n   __napi_poll+0x2d/0x130\n\nFix the root cause by restoring the tpa_info->buffer.data assignment\nin qede_tpa_start(), ensuring valid pages are correctly tracked and\nrecycled. Additionally, update the stale comment for\nstruct qede_agg_info::buffer to reflect its current usage.","Type":"Description","Title":"qede: Fix NULL pointer dereference in TPA fragment processing"}]}}}