In the Linux kernel, the following vulnerability has been resolved: rtw89: ser: fix CAM leaks occurring in L2 reset The CAM, meaning address CAM and bssid CAM here, will get leaks during SER (system error recover) L2 reset process and ieee80211_restart_hw() which is called by L2 reset process eventually. The normal flow would be like -> add interface (acquire 1) -> enter ips (release 1) -> leave ips (acquire 1) -> connection (occupy 1) <(A) 1 leak after L2 reset if non-sec connection> The ieee80211_restart_hw() flow (under connection) -> ieee80211 reconfig -> add interface (acquire 1) -> leave ips (acquire 1) -> connection (occupy (A) + 2) <(B) 1 more leak> Originally, CAM is released before HW restart only if connection is under security. Now, release CAM whatever connection it is to fix leak in (A). OTOH, check if CAM is already valid to avoid acquiring multiple times to fix (B). Besides, if AP mode, release address CAM of all stations before HW restart.
Conclusion & alert: CVE-2022-49539 is rated Low Risk (27.7/100): CVSS Medium severity, with low exploitation likelihood (EPSS 0.05%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-12-23 | 0.04% | 0.05% | +0.01% |
| 2 | 2025-10-22 | 0.05% | 0.04% | -0.01% |
| 3 | 2025-08-06 | — | 0.05% | — |
Full EPSS history (4 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 5.5 | 3.1 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
unimportant | CVE-2022-49539 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2022-49539 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2022-49539 |
suse
|
low | CVE-2022-49539 severity low: SUSE including 73 source package names (bpftool-4.18.0-477.10.1.el8_8, bpftool-7.0.0-284.11.1.el9_2, …), 198 product×package rows across 32 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Liberty Linux 8, … (32 product lines)): Known Not Affected 151, Fixed 47. | https://www.suse.com/security/cve/CVE-2022-49539/ |
ubuntu
|
medium | CVE-2022-49539 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, ignored 150, released 92, not-affected 89, needed 75. | https://ubuntu.com/security/CVE-2022-49539 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| linux | linux_kernel | >= 5.16, < 5.18.3 | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* |