CVE-2022-2905
mediumAn out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the bpf_tail_call function with a key larger than the max_e…
Vendor / product: Linux — linux kernel
An out-of-bounds memory read flaw was found in the Linux kernel's BPF subsystem in how a user calls the bpf_tail_call function with a key larger than the max_entries of the map. This flaw allows a local user to gain unauthorized access to data.
CVSS
5.5
5.5 (CVSS v3.1)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2022-09-09 15:15
Modified: 2026-11-02 22:17
NVD status: Modified
Last synced 3 hours ago
Verified against the source API 2026-11-02 22:45 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
linux / linux_kernel <6.0, 6.0
redhat / enterprise_linux 8.0
debian / debian_linux 10.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Patch / mitigation: https://bugzilla.redhat.com/show_bug.cgi?id=2121800
Patch / mitigation: https://bugzilla.redhat.com/show_bug.cgi?id=2121800
References
- https://bugzilla.redhat.com/show_bug.cgi?id=2121800 secalert@redhat.com
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html secalert@redhat.com
- https://lore.kernel.org/bpf/984b37f9fdf7ac36831d2137415a4a915744c1b6.1661462653.git.daniel... secalert@redhat.com
- https://bugzilla.redhat.com/show_bug.cgi?id=2121800 af854a3a-2127-422b-91ae-364da2661108
- https://lists.debian.org/debian-lts-announce/2022/11/msg00001.html af854a3a-2127-422b-91ae-364da2661108
- https://lore.kernel.org/bpf/984b37f9fdf7ac36831d2137415a4a915744c1b6.1661462653.git.daniel... af854a3a-2127-422b-91ae-364da2661108
- https://cert-portal.siemens.com/productcert/html/ssa-794697.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
- https://cert-portal.siemens.com/productcert/html/ssa-831302.html 0b142b55-0307-4c5a-b3c9-f314f3fb7c5e
Data sources
NVD CVE API 2.0 — fetched 2026-11-02 22:45 UTC · record ↗