{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2024-40995","assignerOrgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","state":"PUBLISHED","assignerShortName":"Linux","dateReserved":"2024-07-12T12:17:45.607Z","datePublished":"2024-07-12T12:37:37.791Z","dateUpdated":"2025-11-03T21:58:59.618Z"},"containers":{"cna":{"providerMetadata":{"orgId":"416baaa9-dc9f-4396-8d5f-8c081fb06d67","shortName":"Linux","dateUpdated":"2025-05-04T09:19:36.408Z"},"descriptions":[{"lang":"en","value":"In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()\n\nsyzbot found hanging tasks waiting on rtnl_lock [1]\n\nA reproducer is available in the syzbot bug.\n\nWhen a request to add multiple actions with the same index is sent, the\nsecond request will block forever on the first request. This holds\nrtnl_lock, and causes tasks to hang.\n\nReturn -EAGAIN to prevent infinite looping, while keeping documented\nbehavior.\n\n[1]\n\nINFO: task kworker/1:0:5088 blocked for more than 143 seconds.\nNot tainted 6.9.0-rc4-syzkaller-00173-g3cdb45594619 #0\n\"echo 0 > /proc/sys/kernel/hung_task_timeout_secs\" disables this message.\ntask:kworker/1:0 state:D stack:23744 pid:5088 tgid:5088 ppid:2 flags:0x00004000\nWorkqueue: events_power_efficient reg_check_chans_work\nCall Trace:\n<TASK>\ncontext_switch kernel/sched/core.c:5409 [inline]\n__schedule+0xf15/0x5d00 kernel/sched/core.c:6746\n__schedule_loop kernel/sched/core.c:6823 [inline]\nschedule+0xe7/0x350 kernel/sched/core.c:6838\nschedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6895\n__mutex_lock_common kernel/locking/mutex.c:684 [inline]\n__mutex_lock+0x5b8/0x9c0 kernel/locking/mutex.c:752\nwiphy_lock include/net/cfg80211.h:5953 [inline]\nreg_leave_invalid_chans net/wireless/reg.c:2466 [inline]\nreg_check_chans_work+0x10a/0x10e0 net/wireless/reg.c:2481"}],"affected":[{"product":"Linux","vendor":"Linux","defaultStatus":"unaffected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sched/act_api.c"],"versions":[{"version":"0190c1d452a91c38a3462abdd81752be1b9006a8","lessThan":"0d8a2d287c8a394c0d4653f0c6c7be4c688e5a74","status":"affected","versionType":"git"},{"version":"0190c1d452a91c38a3462abdd81752be1b9006a8","lessThan":"c6a7da65a296745535a964be1019ec7691b0cb90","status":"affected","versionType":"git"},{"version":"0190c1d452a91c38a3462abdd81752be1b9006a8","lessThan":"25987a97eec4d5f897cd04ee1b45170829c610da","status":"affected","versionType":"git"},{"version":"0190c1d452a91c38a3462abdd81752be1b9006a8","lessThan":"6fc78d67f51aeb9a542d39a8714e16bc411582d4","status":"affected","versionType":"git"},{"version":"0190c1d452a91c38a3462abdd81752be1b9006a8","lessThan":"5f926aa96b08b6c47178fe1171e7ae331c695fc2","status":"affected","versionType":"git"},{"version":"0190c1d452a91c38a3462abdd81752be1b9006a8","lessThan":"7a0e497b597df7c4cf2b63fc6e9188b6cabe5335","status":"affected","versionType":"git"},{"version":"0190c1d452a91c38a3462abdd81752be1b9006a8","lessThan":"d864319871b05fadd153e0aede4811ca7008f5d6","status":"affected","versionType":"git"}]},{"product":"Linux","vendor":"Linux","defaultStatus":"affected","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","programFiles":["net/sched/act_api.c"],"versions":[{"version":"4.19","status":"affected"},{"version":"0","lessThan":"4.19","status":"unaffected","versionType":"semver"},{"version":"5.4.279","lessThanOrEqual":"5.4.*","status":"unaffected","versionType":"semver"},{"version":"5.10.221","lessThanOrEqual":"5.10.*","status":"unaffected","versionType":"semver"},{"version":"5.15.162","lessThanOrEqual":"5.15.*","status":"unaffected","versionType":"semver"},{"version":"6.1.96","lessThanOrEqual":"6.1.*","status":"unaffected","versionType":"semver"},{"version":"6.6.36","lessThanOrEqual":"6.6.*","status":"unaffected","versionType":"semver"},{"version":"6.9.7","lessThanOrEqual":"6.9.*","status":"unaffected","versionType":"semver"},{"version":"6.10","lessThanOrEqual":"*","status":"unaffected","versionType":"original_commit_for_fix"}]}],"cpeApplicability":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.4.279"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.10.221"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"5.15.162"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.1.96"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.6.36"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.9.7"},{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionStartIncluding":"4.19","versionEndExcluding":"6.10"}]}]}],"references":[{"url":"https://git.kernel.org/stable/c/0d8a2d287c8a394c0d4653f0c6c7be4c688e5a74"},{"url":"https://git.kernel.org/stable/c/c6a7da65a296745535a964be1019ec7691b0cb90"},{"url":"https://git.kernel.org/stable/c/25987a97eec4d5f897cd04ee1b45170829c610da"},{"url":"https://git.kernel.org/stable/c/6fc78d67f51aeb9a542d39a8714e16bc411582d4"},{"url":"https://git.kernel.org/stable/c/5f926aa96b08b6c47178fe1171e7ae331c695fc2"},{"url":"https://git.kernel.org/stable/c/7a0e497b597df7c4cf2b63fc6e9188b6cabe5335"},{"url":"https://git.kernel.org/stable/c/d864319871b05fadd153e0aede4811ca7008f5d6"}],"title":"net/sched: act_api: fix possible infinite loop in tcf_idr_check_alloc()","x_generator":{"engine":"bippy-1.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/stable/c/0d8a2d287c8a394c0d4653f0c6c7be4c688e5a74","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/c6a7da65a296745535a964be1019ec7691b0cb90","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/25987a97eec4d5f897cd04ee1b45170829c610da","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/6fc78d67f51aeb9a542d39a8714e16bc411582d4","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/5f926aa96b08b6c47178fe1171e7ae331c695fc2","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/7a0e497b597df7c4cf2b63fc6e9188b6cabe5335","tags":["x_transferred"]},{"url":"https://git.kernel.org/stable/c/d864319871b05fadd153e0aede4811ca7008f5d6","tags":["x_transferred"]},{"url":"https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2025-11-03T21:58:59.618Z"}},{"metrics":[{"other":{"type":"ssvc","content":{"id":"CVE-2024-40995","role":"CISA Coordinator","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"version":"2.0.3","timestamp":"2024-09-10T17:01:35.312165Z"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2024-09-11T17:34:19.797Z"}}]}}