{"id":"CVE-2026-43445","summary":"e1000/e1000e: Fix leak in DMA error cleanup","details":"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.","modified":"2026-07-07T08:39:46.796113507Z","published":"2026-05-08T14:22:12.660Z","database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43445.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/0606c24a745bafd1be5d66c48361638cd9cad74b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/0a1fc25deabab4efce64610e3c449485c4fa8f5f"},{"type":"WEB","url":"https://git.kernel.org/stable/c/10b5e65959e955a1c8894e0a5413944b5a70204a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/30e87ade8d678c25a8546cf38c0b498fa5cb27d3"},{"type":"WEB","url":"https://git.kernel.org/stable/c/519051c711dfd239ef6e4b28878efee400a035f9"},{"type":"WEB","url":"https://git.kernel.org/stable/c/7eaeb778bfaa3b2a804f89321c234d59c74569db"},{"type":"WEB","url":"https://git.kernel.org/stable/c/e94eaef11142b01f77bf8ba4d0b59720b7858109"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fa5ba9867a55e640df0dc79bf0199770fb043f03"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/43xxx/CVE-2026-43445.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-43445"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"c1fa347f20f17f14a4a1575727fa24340e8a9117"},{"fixed":"7eaeb778bfaa3b2a804f89321c234d59c74569db"},{"fixed":"0606c24a745bafd1be5d66c48361638cd9cad74b"},{"fixed":"519051c711dfd239ef6e4b28878efee400a035f9"},{"fixed":"0a1fc25deabab4efce64610e3c449485c4fa8f5f"},{"fixed":"fa5ba9867a55e640df0dc79bf0199770fb043f03"},{"fixed":"30e87ade8d678c25a8546cf38c0b498fa5cb27d3"},{"fixed":"10b5e65959e955a1c8894e0a5413944b5a70204a"},{"fixed":"e94eaef11142b01f77bf8ba4d0b59720b7858109"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43445.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.6.33"},{"fixed":"5.10.253"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.203"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.167"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.130"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.78"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.18.19"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.19.0"},{"fixed":"6.19.9"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-43445.json"}}],"schema_version":"1.7.5"}