{"id":"CVE-2026-64145","state":"PUBLISHED","title":"wifi: wilc1000: fix dma_buffer leak on bus acquire failure","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wilc1000: fix dma_buffer leak on bus acquire failure\n\nwilc_wlan_firmware_download() allocates dma_buffer with kmalloc() at\nthe top of the function and uses a 'fail:' label to free it via\nkfree(dma_buffer) on error.\n\nAll later error paths correctly use 'goto fail' to route through this\ncleanup. However, the early failure path after the first acquire_bus()\ncall uses a bare 'return ret;', which leaks dma_buffer whenever the bus\nacquire fails.\n\nReplace the early return with goto fail so the existing cleanup path\nruns.\n\nFound via a custom Coccinelle semantic patch hunting for kmalloc'd\nlocals leaked on early-return error paths in driver firmware-download\ncode.","publishedAt":"2026-07-19T15:40:36.767Z","updatedAt":"2026-07-19T15:40:36.767Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1241c5650ff7a0236cebb89acca8aade48839fd6","status":"affected","lessThan":"95c82d498d74c4e587db30021ca1aec90e29b5a5","versionType":"git"},{"version":"1241c5650ff7a0236cebb89acca8aade48839fd6","status":"affected","lessThan":"32d7584441b9ecb279a03653b432612546e5efbe","versionType":"git"},{"version":"1241c5650ff7a0236cebb89acca8aade48839fd6","status":"affected","lessThan":"dd7b6a8671939708cc4b7a46786d8c11297e8f69","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/microchip/wilc1000/wlan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/microchip/wilc1000/wlan.c"]}],"references":["https://git.kernel.org/stable/c/95c82d498d74c4e587db30021ca1aec90e29b5a5","https://git.kernel.org/stable/c/32d7584441b9ecb279a03653b432612546e5efbe","https://git.kernel.org/stable/c/dd7b6a8671939708cc4b7a46786d8c11297e8f69"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:41.951Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/64xxx/CVE-2026-64145.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-64145","state":"PUBLISHED","datePublished":"2026-07-19T15:40:36.767Z","dateUpdated":"2026-07-19T15:40:36.767Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-07-19T07:54:57.037Z"},"containers":{"cna":{"title":"wifi: wilc1000: fix dma_buffer leak on bus acquire failure","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nwifi: wilc1000: fix dma_buffer leak on bus acquire failure\n\nwilc_wlan_firmware_download() allocates dma_buffer with kmalloc() at\nthe top of the function and uses a 'fail:' label to free it via\nkfree(dma_buffer) on error.\n\nAll later error paths correctly use 'goto fail' to route through this\ncleanup. However, the early failure path after the first acquire_bus()\ncall uses a bare 'return ret;', which leaks dma_buffer whenever the bus\nacquire fails.\n\nReplace the early return with goto fail so the existing cleanup path\nruns.\n\nFound via a custom Coccinelle semantic patch hunting for kmalloc'd\nlocals leaked on early-return error paths in driver firmware-download\ncode."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"1241c5650ff7a0236cebb89acca8aade48839fd6","status":"affected","lessThan":"95c82d498d74c4e587db30021ca1aec90e29b5a5","versionType":"git"},{"version":"1241c5650ff7a0236cebb89acca8aade48839fd6","status":"affected","lessThan":"32d7584441b9ecb279a03653b432612546e5efbe","versionType":"git"},{"version":"1241c5650ff7a0236cebb89acca8aade48839fd6","status":"affected","lessThan":"dd7b6a8671939708cc4b7a46786d8c11297e8f69","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/microchip/wilc1000/wlan.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.13","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.13","versionType":"semver"},{"version":"6.18.34","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.0.11","status":"unaffected","lessThanOrEqual":"7.0.*","versionType":"semver"},{"version":"7.1","status":"unaffected","lessThanOrEqual":"*","versionType":"original_commit_for_fix"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/wireless/microchip/wilc1000/wlan.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/95c82d498d74c4e587db30021ca1aec90e29b5a5"},{"url":"https://git.kernel.org/stable/c/32d7584441b9ecb279a03653b432612546e5efbe"},{"url":"https://git.kernel.org/stable/c/dd7b6a8671939708cc4b7a46786d8c11297e8f69"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-07-19T15:40:36.767Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"6.18.34"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.0.11"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.13","versionEndExcluding":"7.1"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}