[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"repo-stars":3,"vuln-DEBIAN-CVE-2026-31555":6},{"stargazers_count":4,"fetched_at":5},8,"2026-09-19T04:32:17.889Z",{"id":7,"descriptions":8,"cisa":9,"weaknesses":10,"exploits":11,"aliases":12,"duplicate_of":9,"upstream":13,"downstream":16,"duplicates":17,"related":18,"reserved_at":9,"published_at":19,"modified_at":20,"state":9,"summary":21,"references_raw":23,"kevs":30,"epss":9,"epss_history":31,"metrics":32,"affected":39},"DEBIAN-CVE-2026-31555","In the Linux kernel, the following vulnerability has been resolved:  futex: Clear stale exiting pointer in futex_lock_pi() retry path  Fuzzying/stressing futexes triggered:      WARNING: kernel/futex/core.c:825 at wait_for_owner_exiting+0x7a/0x80, CPU#11: futex_lock_pi_s/524  When futex_lock_pi_atomic() sees the owner is exiting, it returns -EBUSY and stores a refcounted task pointer in 'exiting'.  After wait_for_owner_exiting() consumes that reference, the local pointer is never reset to nil. Upon a retry, if futex_lock_pi_atomic() returns a different error, the bogus pointer is passed to wait_for_owner_exiting().    CPU0\t\t\t     CPU1\t\t       CPU2   futex_lock_pi(uaddr)   // acquires the PI futex   exit()     futex_cleanup_begin()       futex_state = EXITING; \t\t\t     futex_lock_pi(uaddr) \t\t\t       futex_lock_pi_atomic() \t\t\t\t attach_to_pi_owner() \t\t\t\t   // observes EXITING \t\t\t\t   *exiting = owner;  // takes ref \t\t\t\t   return -EBUSY \t\t\t       wait_for_owner_exiting(-EBUSY, owner) \t\t\t\t put_task_struct();   // drops ref \t\t\t       // exiting still points to owner \t\t\t       goto retry; \t\t\t       futex_lock_pi_atomic() \t\t\t\t lock_pi_update_atomic() \t\t\t\t   cmpxchg(uaddr) \t\t\t\t\t*uaddr ^= WAITERS // whatever \t\t\t\t   // value changed \t\t\t\t return -EAGAIN; \t\t\t       wait_for_owner_exiting(-EAGAIN, exiting) // stale \t\t\t\t WARN_ON_ONCE(exiting)  Fix this by resetting upon retry, essentially aligning it with requeue_pi.",null,[],[],[],[14],{"_key":15},"CVE-2026-31555",[],[],[],"2026-04-24T15:16:29.837Z","2026-06-15T19:06:16.324014637Z",{"cisa_kev":22,"cisa_ransomware":22,"cisa_vendor":9,"epss_severity":9,"epss_score":9,"severity":9,"severity_score":9,"severity_version":9,"severity_source":9,"severity_vector":9,"severity_status":9},false,[24],{"url":25,"sources":26,"tags":28},"https://security-tracker.debian.org/tracker/CVE-2026-31555",[27],"osv_debian",[29],"Advisory",[],[],[33],{"source":27,"cvss_v2_0":9,"cvss_v3_0":9,"cvss_v3_1":34,"cvss_v4_0":9},{"baseScore":35,"baseSeverity":9,"vectorString":36,"impactScore":37,"exploitabilityScore":38},5.5,"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",6,4.6,[40,65],{"ecosystem":41,"name":42,"vendor":43,"product":42,"cpe_part":9,"purl_type":44,"purl_namespace":43,"purl_name":42,"source":9,"versions":45},"Debian","linux","debian","deb",[46,50,51,52,56,59,62],{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},"all",true,"ecosystem",{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":47,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":9,"version_end_type":9,"fixed_in":9},{"version":53,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":54,"version_end_type":55,"fixed_in":9},"lt5_10_257_1","5.10.257-1","excluding",{"version":57,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":58,"version_end_type":55,"fixed_in":9},"lt6_1_170_1","6.1.170-1",{"version":60,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":61,"version_end_type":55,"fixed_in":9},"lt6_12_85_1","6.12.85-1",{"version":63,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":64,"version_end_type":55,"fixed_in":9},"lt6_19_11_1","6.19.11-1",{"ecosystem":41,"name":66,"vendor":43,"product":66,"cpe_part":9,"purl_type":44,"purl_namespace":43,"purl_name":66,"source":9,"versions":67},"linux-6.1",[68],{"version":69,"is_range":48,"range_type":49,"version_start":9,"version_start_type":9,"version_end":70,"version_end_type":55,"fixed_in":9},"lt6_1_170_1~deb11u1","6.1.170-1~deb11u1"]