{"id":"CVE-2026-72037","state":"PUBLISHED","title":"net: lan743x: Initialize eth_syslock spinlock before use","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan743x: Initialize eth_syslock spinlock before use\n\nlan743x_hardware_init() calls pci11x1x_strap_get_status() during the\nPCI11x1x probe sequence. That helper acquires the Ethernet subsystem\nhardware lock via lan743x_hs_syslock_acquire(), which relies on\nadapter->eth_syslock_spinlock to serialize access.\n\nThe spinlock is currently initialized only after the strap status is\nread. With CONFIG_DEBUG_SPINLOCK enabled, taking the zeroed initialized\nspinlock can trip the spinlock debug check.\n\nFix by initializing adapter->eth_syslock_spinlock before reading the\nstrap status so the probe path never attempts to lock an uninitialized\nspinlock.","publishedAt":"2026-08-15T05:51:57.745Z","updatedAt":"2026-08-17T05:07:02.911Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"dfaefd9a7808736fcd2ed0de108f55c4badc15cc","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"6523daa6852b1bfef32ec7a105b0217e8a115687","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"b6a93a42e0e61f0ba0005a942ee3bffb16c0574e","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"99a6f37b113c46815deb160c5012073563679ef4","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"b99e890e6b32ffa11c145a16fefcf2c7137a9578","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"39139b1c1c2b614096519b526112c726adb12ff0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/microchip/lan743x_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","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/microchip/lan743x_main.c"]}],"references":["https://git.kernel.org/stable/c/dfaefd9a7808736fcd2ed0de108f55c4badc15cc","https://git.kernel.org/stable/c/6523daa6852b1bfef32ec7a105b0217e8a115687","https://git.kernel.org/stable/c/b6a93a42e0e61f0ba0005a942ee3bffb16c0574e","https://git.kernel.org/stable/c/99a6f37b113c46815deb160c5012073563679ef4","https://git.kernel.org/stable/c/b99e890e6b32ffa11c145a16fefcf2c7137a9578","https://git.kernel.org/stable/c/39139b1c1c2b614096519b526112c726adb12ff0"],"weaknesses":[],"ingestedAt":"2026-10-29T20:12:58.252Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/72xxx/CVE-2026-72037.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-72037","state":"PUBLISHED","datePublished":"2026-08-15T05:51:57.745Z","dateUpdated":"2026-08-17T05:07:02.911Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-09T03:40:39.901Z"},"containers":{"cna":{"title":"net: lan743x: Initialize eth_syslock spinlock before use","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet: lan743x: Initialize eth_syslock spinlock before use\n\nlan743x_hardware_init() calls pci11x1x_strap_get_status() during the\nPCI11x1x probe sequence. That helper acquires the Ethernet subsystem\nhardware lock via lan743x_hs_syslock_acquire(), which relies on\nadapter->eth_syslock_spinlock to serialize access.\n\nThe spinlock is currently initialized only after the strap status is\nread. With CONFIG_DEBUG_SPINLOCK enabled, taking the zeroed initialized\nspinlock can trip the spinlock debug check.\n\nFix by initializing adapter->eth_syslock_spinlock before reading the\nstrap status so the probe path never attempts to lock an uninitialized\nspinlock."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"dfaefd9a7808736fcd2ed0de108f55c4badc15cc","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"6523daa6852b1bfef32ec7a105b0217e8a115687","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"b6a93a42e0e61f0ba0005a942ee3bffb16c0574e","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"99a6f37b113c46815deb160c5012073563679ef4","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"b99e890e6b32ffa11c145a16fefcf2c7137a9578","versionType":"git"},{"version":"46b777ad9a8c269113634cee6a380bc4e53f3964","status":"affected","lessThan":"39139b1c1c2b614096519b526112c726adb12ff0","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/net/ethernet/microchip/lan743x_main.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.0","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.0","versionType":"semver"},{"version":"6.1.178","status":"unaffected","lessThanOrEqual":"6.1.*","versionType":"semver"},{"version":"6.6.145","status":"unaffected","lessThanOrEqual":"6.6.*","versionType":"semver"},{"version":"6.12.97","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.40","status":"unaffected","lessThanOrEqual":"6.18.*","versionType":"semver"},{"version":"7.1.5","status":"unaffected","lessThanOrEqual":"7.1.*","versionType":"semver"},{"version":"7.2","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/microchip/lan743x_main.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/dfaefd9a7808736fcd2ed0de108f55c4badc15cc"},{"url":"https://git.kernel.org/stable/c/6523daa6852b1bfef32ec7a105b0217e8a115687"},{"url":"https://git.kernel.org/stable/c/b6a93a42e0e61f0ba0005a942ee3bffb16c0574e"},{"url":"https://git.kernel.org/stable/c/99a6f37b113c46815deb160c5012073563679ef4"},{"url":"https://git.kernel.org/stable/c/b99e890e6b32ffa11c145a16fefcf2c7137a9578"},{"url":"https://git.kernel.org/stable/c/39139b1c1c2b614096519b526112c726adb12ff0"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-08-17T05:07:02.911Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.1.178"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.6.145"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.12.97"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"6.18.40"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.0","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}