{"id":"CVE-2026-80655","state":"PUBLISHED","title":"soc: xilinx: Fix race condition in event registration","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nsoc: xilinx: Fix race condition in event registration\n\nThe zynqmp_power driver registers handlers for suspend and subsystem\nrestart events using register_event(). However, the work structures\n(zynqmp_pm_init_suspend_work and zynqmp_pm_init_restart_work) used by\nthese handlers were allocated and initialized after the registration\ncall.\n\nThis created a race window where, if the firmware triggered an event\nimmediately after registration but before allocation, the callback\n(suspend_event_callback or subsystem_restart_event_callback) would\ndereference a NULL pointer in work_pending(), leading to a crash.\n\nFix this by allocating and initializing the work structures before\nregistering the events.","publishedAt":"2026-08-28T06:49:01.988Z","updatedAt":"2026-10-21T12:46:48.145Z","severity":null,"assigner":"Linux","products":["Linux Linux"],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fcf544ac64397776a18246eba5a8ca72a47c4405","status":"affected","lessThan":"07ea9081b8fefb99e2f427e0f0602a5e576cb120","versionType":"git"},{"version":"fcf544ac64397776a18246eba5a8ca72a47c4405","status":"affected","lessThan":"e124f7b170337563d78a7a6aa152c897d229bc39","versionType":"git"},{"version":"fcf544ac64397776a18246eba5a8ca72a47c4405","status":"affected","lessThan":"d349aa118ff5e4cab88424ce1b16e08edd70f8bb","versionType":"git"},{"version":"fcf544ac64397776a18246eba5a8ca72a47c4405","status":"affected","lessThan":"fb445935338405110baca8f541a2df3b4cb8d712","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/xilinx/zynqmp_power.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","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/soc/xilinx/zynqmp_power.c"]}],"references":["https://git.kernel.org/stable/c/07ea9081b8fefb99e2f427e0f0602a5e576cb120","https://git.kernel.org/stable/c/e124f7b170337563d78a7a6aa152c897d229bc39","https://git.kernel.org/stable/c/d349aa118ff5e4cab88424ce1b16e08edd70f8bb","https://git.kernel.org/stable/c/fb445935338405110baca8f541a2df3b4cb8d712"],"weaknesses":[],"ingestedAt":"2026-10-29T20:13:07.220Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/80xxx/CVE-2026-80655.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-80655","state":"PUBLISHED","datePublished":"2026-08-28T06:49:01.988Z","dateUpdated":"2026-10-21T12:46:48.145Z","assignerShortName":"Linux","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateReserved":"2026-08-26T14:34:25.780Z"},"containers":{"cna":{"title":"soc: xilinx: Fix race condition in event registration","descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nsoc: xilinx: Fix race condition in event registration\n\nThe zynqmp_power driver registers handlers for suspend and subsystem\nrestart events using register_event(). However, the work structures\n(zynqmp_pm_init_suspend_work and zynqmp_pm_init_restart_work) used by\nthese handlers were allocated and initialized after the registration\ncall.\n\nThis created a race window where, if the firmware triggered an event\nimmediately after registration but before allocation, the callback\n(suspend_event_callback or subsystem_restart_event_callback) would\ndereference a NULL pointer in work_pending(), leading to a crash.\n\nFix this by allocating and initializing the work structures before\nregistering the events."}],"affected":[{"vendor":"Linux","product":"Linux","defaultStatus":"unaffected","versions":[{"version":"fcf544ac64397776a18246eba5a8ca72a47c4405","status":"affected","lessThan":"07ea9081b8fefb99e2f427e0f0602a5e576cb120","versionType":"git"},{"version":"fcf544ac64397776a18246eba5a8ca72a47c4405","status":"affected","lessThan":"e124f7b170337563d78a7a6aa152c897d229bc39","versionType":"git"},{"version":"fcf544ac64397776a18246eba5a8ca72a47c4405","status":"affected","lessThan":"d349aa118ff5e4cab88424ce1b16e08edd70f8bb","versionType":"git"},{"version":"fcf544ac64397776a18246eba5a8ca72a47c4405","status":"affected","lessThan":"fb445935338405110baca8f541a2df3b4cb8d712","versionType":"git"}],"repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["drivers/soc/xilinx/zynqmp_power.c"]},{"vendor":"Linux","product":"Linux","defaultStatus":"affected","versions":[{"version":"6.11","status":"affected"},{"version":"0","status":"unaffected","lessThan":"6.11","versionType":"semver"},{"version":"6.12.114","status":"unaffected","lessThanOrEqual":"6.12.*","versionType":"semver"},{"version":"6.18.57","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/soc/xilinx/zynqmp_power.c"]}],"references":[{"url":"https://git.kernel.org/stable/c/07ea9081b8fefb99e2f427e0f0602a5e576cb120"},{"url":"https://git.kernel.org/stable/c/e124f7b170337563d78a7a6aa152c897d229bc39"},{"url":"https://git.kernel.org/stable/c/d349aa118ff5e4cab88424ce1b16e08edd70f8bb"},{"url":"https://git.kernel.org/stable/c/fb445935338405110baca8f541a2df3b4cb8d712"}],"providerMetadata":{"shortName":"Linux","orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","dateUpdated":"2026-10-21T12:46:48.145Z"},"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.12.114"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"6.18.57"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.1.5"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"6.11","versionEndExcluding":"7.2"}]}]}],"x_generator":{"engine":"bippy-1.2.0"}}}}}