CVE-2026-53092
- Source
- https://cve.org/CVERecord?id=CVE-2026-53092
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-53092.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-53092
- Downstream
- Published
- 2026-06-24T16:30:31Z
- Modified
- 2026-08-25T03:51:43Z
- Severity
-
- 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
- Summary
- bpf: Fix linked reg delta tracking when src_reg == dst_reg
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
bpf: Fix linked reg delta tracking when src_reg == dst_reg
Consider the case of rX += rX where src_reg and dst_reg are pointers to the same bpf_reg_state in adjust_reg_min_max_vals(). The latter first modifies the dst_reg in-place, and later in the delta tracking, the subsequent is_reg_const(src_reg)/reg_const_value(src_reg) reads the post-{add,sub} value instead of the original source.
This is problematic since it sets an incorrect delta, which sync_linked_regs() then propagates to linked registers, thus creating a verifier-vs-runtime mismatch. Fix it by just skipping this corner case.
- Database specific
{ "cna_assigner": "Linux", "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53092.json" }- References
-
- https://git.kernel.org/stable/c/1509c1ae9185ec7103899967ed788b6eebab3fcc
- https://git.kernel.org/stable/c/cc86a8b0a1c54d2bccf6f68cf49b82dea91b84de
- https://git.kernel.org/stable/c/d7f14173c0d5866c3cae759dee560ad1bed10d2e
- https://git.kernel.org/stable/c/d88e8e4a3b52bd5b2ff3eceba4b29d1b5506d066
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53092.json
- https://access.redhat.com/security/cve/CVE-2026-53092
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53092.json
- https://nvd.nist.gov/vuln/detail/CVE-2026-53092
- https://bugzilla.redhat.com/show_bug.cgi?id=2492362
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced98d7ca374ba4b39e7535613d40e159f09ca14da2Fixed1509c1ae9185ec7103899967ed788b6eebab3fccFixedd88e8e4a3b52bd5b2ff3eceba4b29d1b5506d066Fixedcc86a8b0a1c54d2bccf6f68cf49b82dea91b84deFixedd7f14173c0d5866c3cae759dee560ad1bed10d2e