CVE-2026-31657
CriticalCVSS 9.8Summary
W jądrze systemu Linux zidentyfikowano podatność w module batman-adv, która pozwala na zastąpienie wskaźnika do bramy backbone bez odpowiedniego zarządzania referencjami. To może prowadzić do sytuacji, w której wskaźnik do bramy jest używany po jego zwolnieniu.
Risk Assessment
Organizacje mogą być narażone na problemy z dostępnością i stabilnością sieci, ponieważ nieprawidłowe zarządzanie referencjami może prowadzić do błędów w działaniu aplikacji korzystających z tego modułu.
Recommendation
Zaleca się aktualizację jądra systemu Linux do najnowszej wersji, aby usunąć tę podatność oraz monitorowanie systemów w celu wykrycia potencjalnych problemów związanych z zarządzaniem referencjami.
Related vulnerabilities
- CVE-2026-107282Critical
Vulnerability in AsyncHttpClient (AHC) library before versions 3.0.13 and 2.16.1 allows cross-host request replay that updates the current request but leaves the target request and proxy context pointing to the original origin. This can send the original host's path, Host header, Authorization credentials, or plaintext request to the replay destination.
- CVE-2026-76268Critical
Vulnerability in Splunk Enterprise before versions 10.4.3 and 10.2.7 allows an unauthenticated user with network access to the Patroni REST API on a search head cluster member to execute attacker-controlled OS commands. The interface does not require authentication for critical configuration operations.
- CVE-2026-95606Critical
Deserialization of untrusted data vulnerability in The Events Calendar plugin allows object injection. Affects versions up to 6.17.4.
- CVE-2026-95605Critical
SQL injection vulnerability in WP Data Access allows blind SQL injection. Affects versions up to 5.5.82.
- CVE-2026-76501Critical
Vulnerability in SRv6 OAM (NGOAM) feature of Cisco NX-OS allows unauthenticated remote attacker to execute arbitrary code with root privileges or cause DoS. Due to improper input validation when NGOAM and SRv6 features are enabled.
- CVE-2026-76500Critical
A security review in Cisco APIC revealed multiple vulnerabilities related to improper control of a resource through its lifetime (CWE-664). These have been addressed in hardening releases.
- CVE-2026-76499Critical
A security review in Cisco APIC revealed multiple vulnerabilities related to improper neutralization issues (CWE-707). These have been addressed in hardening releases.
- CVE-2026-76498Critical
A security review in Cisco APIC revealed multiple vulnerabilities related to improper access control (CWE-284). These have been addressed in hardening releases.
- CVE-2026-76486Critical
Vulnerability in VXLAN OAM (NGOAM) feature of Cisco NX-OS allows unauthenticated remote attacker to execute arbitrary code with root privileges or cause DoS. Due to improper input validation when NGOAM is enabled.
- CVE-2026-76485Critical
Vulnerability in VXLAN OAM (NGOAM) feature of Cisco NX-OS allows unauthenticated remote attacker to execute arbitrary code with root privileges or cause DoS. Due to improper input validation when NGOAM is enabled.
Original NVD description (English source)
In the Linux kernel, the following vulnerability has been resolved: batman-adv: hold claim backbone gateways by reference batadv_bla_add_claim() can replace claim->backbone_gw and drop the old gateway's last reference while readers still follow the pointer. The netlink claim dump path dereferences claim->backbone_gw->orig and takes claim->backbone_gw->crc_lock without pinning the underlying backbone gateway. batadv_bla_check_claim() still has the same naked pointer access pattern. Reuse batadv_bla_claim_get_backbone_gw() in both readers so they operate on a stable gateway reference until the read-side work is complete. This keeps the dump and claim-check paths aligned with the lifetime rules introduced for the other BLA claim readers.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS