{"id":"CVE-2026-43445","state":"PUBLISHED","title":"e1000/e1000e: Fix leak in DMA error cleanup","description":"In the Linux kernel, the following vulnerability has been resolved:\n\ne1000/e1000e: Fix leak in DMA error cleanup\n\nIf an error is encountered while mapping TX buffers, the driver should\nunmap any buffers already mapped for that skb.\n\nBecause count is incremented after a successful mapping, it will always\nmatch the correct number of unmappings needed when dma_error is reached.\nDecrementing count before the while loop in dma_error causes an\noff-by-one error. If any mapping was successful before an unsuccessful\nmapping, exactly one DMA mapping would leak.\n\nIn these commits, a faulty while condition caused an infinite loop in\ndma_error:\nCommit 03b1320dfcee (\"e1000e: remove use of skb_dma_map from e1000e\ndriver\")\nCommit 602c0554d7b0 (\"e1000: remove use of skb_dma_map from e1000 driver\")\n\nCommit c1fa347f20f1 (\"e1000/e1000e/igb/igbvf/ixgb/ixgbe: Fix tests of\nunsigned in *_tx_map()\") fixed the infinite loop, but introduced the\noff-by-one error.\n\nThis issue may still exist in the igbvf driver, but I did not address it\nin this patch.","publishedAt":"2026-05-08T14:22:12.660Z","updatedAt":"2026-05-11T22:24:43.676Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"7eaeb778bfaa3b2a804f89321c234d59c74569db","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"0606c24a745bafd1be5d66c48361638cd9cad74b","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"519051c711dfd239ef6e4b28878efee400a035f9","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"0a1fc25deabab4efce64610e3c449485c4fa8f5f","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"fa5ba9867a55e640df0dc79bf0199770fb043f03","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"30e87ade8d678c25a8546cf38c0b498fa5cb27d3","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"10b5e65959e955a1c8894e0a5413944b5a70204a","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"e94eaef11142b01f77bf8ba4d0b59720b7858109","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/e1000/e1000_main.c","drivers/net/ethernet/intel/e1000e/netdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.33","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.33","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.19","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.9","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/e1000/e1000_main.c","drivers/net/ethernet/intel/e1000e/netdev.c"]}],"references":["https://git.kernel.org/stable/c/7eaeb778bfaa3b2a804f89321c234d59c74569db","https://git.kernel.org/stable/c/0606c24a745bafd1be5d66c48361638cd9cad74b","https://git.kernel.org/stable/c/519051c711dfd239ef6e4b28878efee400a035f9","https://git.kernel.org/stable/c/0a1fc25deabab4efce64610e3c449485c4fa8f5f","https://git.kernel.org/stable/c/fa5ba9867a55e640df0dc79bf0199770fb043f03","https://git.kernel.org/stable/c/30e87ade8d678c25a8546cf38c0b498fa5cb27d3","https://git.kernel.org/stable/c/10b5e65959e955a1c8894e0a5413944b5a70204a","https://git.kernel.org/stable/c/e94eaef11142b01f77bf8ba4d0b59720b7858109"],"weaknesses":[],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/43xxx/CVE-2026-43445.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-43445","state":"PUBLISHED","datePublished":"2026-05-08T14:22:12.660Z","dateUpdated":"2026-05-11T22:24:43.676Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-05-01T14:12:56.010Z"},"containers":{"cna":{"title":"e1000/e1000e: Fix leak in DMA error cleanup","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\ne1000/e1000e: Fix leak in DMA error cleanup\n\nIf an error is encountered while mapping TX buffers, the driver should\nunmap any buffers already mapped for that skb.\n\nBecause count is incremented after a successful mapping, it will always\nmatch the correct number of unmappings needed when dma_error is reached.\nDecrementing count before the while loop in dma_error causes an\noff-by-one error. If any mapping was successful before an unsuccessful\nmapping, exactly one DMA mapping would leak.\n\nIn these commits, a faulty while condition caused an infinite loop in\ndma_error:\nCommit 03b1320dfcee (\"e1000e: remove use of skb_dma_map from e1000e\ndriver\")\nCommit 602c0554d7b0 (\"e1000: remove use of skb_dma_map from e1000 driver\")\n\nCommit c1fa347f20f1 (\"e1000/e1000e/igb/igbvf/ixgb/ixgbe: Fix tests of\nunsigned in *_tx_map()\") fixed the infinite loop, but introduced the\noff-by-one error.\n\nThis issue may still exist in the igbvf driver, but I did not address it\nin this patch."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"7eaeb778bfaa3b2a804f89321c234d59c74569db","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"0606c24a745bafd1be5d66c48361638cd9cad74b","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"519051c711dfd239ef6e4b28878efee400a035f9","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"0a1fc25deabab4efce64610e3c449485c4fa8f5f","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"fa5ba9867a55e640df0dc79bf0199770fb043f03","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"30e87ade8d678c25a8546cf38c0b498fa5cb27d3","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"10b5e65959e955a1c8894e0a5413944b5a70204a","versionType":"git"},{"version":"c1fa347f20f17f14a4a1575727fa24340e8a9117","status":"affected","lessThan":"e94eaef11142b01f77bf8ba4d0b59720b7858109","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/e1000/e1000_main.c","drivers/net/ethernet/intel/e1000e/netdev.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"2.6.33","status":"affected"},{"version":"0","status":"unaffected","lessThan":"2.6.33","versionType":"semver"},{"version":"5.10.253","status":"unaffected","lessThanOrEqual":"5.10.*","versionType":"semver"},{"version":"5.15.203","status":"unaffected","lessThanOrEqual":"5.15.*","versionType":"semver"},{"version":"6.1.167","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.130","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.78","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.19","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"6.19.9","status":"unaffected","lessThanOrEqual":"6.19.*","versionType":"semver"},{"version":"7.0","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/intel/e1000/e1000_main.c","drivers/net/ethernet/intel/e1000e/netdev.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/7eaeb778bfaa3b2a804f89321c234d59c74569db"},{"url":"https://git.kernel.org/stable/c/0606c24a745bafd1be5d66c48361638cd9cad74b"},{"url":"https://git.kernel.org/stable/c/519051c711dfd239ef6e4b28878efee400a035f9"},{"url":"https://git.kernel.org/stable/c/0a1fc25deabab4efce64610e3c449485c4fa8f5f"},{"url":"https://git.kernel.org/stable/c/fa5ba9867a55e640df0dc79bf0199770fb043f03"},{"url":"https://git.kernel.org/stable/c/30e87ade8d678c25a8546cf38c0b498fa5cb27d3"},{"url":"https://git.kernel.org/stable/c/10b5e65959e955a1c8894e0a5413944b5a70204a"},{"url":"https://git.kernel.org/stable/c/e94eaef11142b01f77bf8ba4d0b59720b7858109"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-05-11T22:24:43.676Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.10.253"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"5.15.203"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"6.1.167"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"6.6.130"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"6.12.78"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"6.18.19"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"6.19.9"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"2.6.33","versionEndExcluding":"7.0"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}