netfilter: nft_set_rbtree: check for partial overlaps in anonymous sets
Published May 27, 2026
5.5
MEDIUMCVSS 3.1
EPSS 0.16%
Description
Userspace provides an optimized representation in case intervals are adjacent, where the end element is omitted.
The existing partial overlap detection logic skips anonymous set checks on start elements for this reason.
However, it is possible to add intervals that overlap to this anonymous where two start elements with the same, eg. A-B, A-C where C < B.
start end A B start end A C
Restore the check on overlapping start elements to report an overlap.
Affected products
-
Affected
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
- ≥ , <
-
Affected
- ≥ 4.19.316, < 4.20
- ≥ 5.10.166, < 5.10.252
- ≥ 5.15.91, < 5.15.202
- ≥ 5.4.262, < 5.5
- ≥ 6.1.9, < 6.1.165
-
Affected
- 6.2
Unaffected
- ≥ 0, < 6.2
- ≥ 5.10.252, ≤ 5.10.*
- ≥ 5.15.202, ≤ 5.15.*
- ≥ 6.1.165, ≤ 6.1.*
- ≥ 6.12.75, ≤ 6.12.*
- ≥ 6.18.14, ≤ 6.18.*
- ≥ 6.19.4, ≤ 6.19.*
- ≥ 6.6.128, ≤ 6.6.*
- 7.0
Default status is the baseline for the product. Each version can override it (patched versions can be marked unaffected).
| Vendor | Product | Default status | Versions |
|---|---|---|---|
| Linux | Linux | unaffected | Affected
|
| Linux | Linux | unaffected | Affected
|
| Linux | Linux | affected | Affected
Unaffected
|
- ≥ 4.19.316 · < 4.20
- ≥ 5.4.262 · < 5.5
- ≥ 5.10.166 · < 5.10.252
- ≥ 5.15.91 · < 5.15.202
- ≥ 6.1.9 · < 6.1.165
- ≥ 6.2.1 · < 6.6.128
- ≥ 6.7 · < 6.12.75
- ≥ 6.13 · < 6.18.14
- ≥ 6.19 · < 6.19.4
- 6.2
- 6.2
- 6.2
- 6.2
No data.
Red Hat Enterprise Linux 10
kernel
Fix deferred
Red Hat Enterprise Linux 6
kernel
Not affected
Red Hat Enterprise Linux 7
kernel
Not affected
Red Hat Enterprise Linux 7
kernel-rt
Not affected
Red Hat Enterprise Linux 8
kernel
Not affected
Red Hat Enterprise Linux 8
kernel-rt
Not affected
Red Hat Enterprise Linux 9
kernel
Fix deferred
Red Hat Enterprise Linux 9
kernel-rt
Fix deferred
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 10 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 6 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 7 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel | Not affected | n/a |
| Red Hat Enterprise Linux 8 | kernel-rt | Not affected | n/a |
| Red Hat Enterprise Linux 9 | kernel | Fix deferred | n/a |
| Red Hat Enterprise Linux 9 | kernel-rt | Fix deferred | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
References (14)
- https://access.redhat.com/security/cve/CVE-2026-45873 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2481943 Issue Tracking
- https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-32339 Advisory
- https://git.kernel.org/stable/c/029e5f6a95e905b12d6bc20421be32a01e0eb311 Patch
- https://git.kernel.org/stable/c/05feaf826390fd16f1deb89dd9412def3b2a280f Patch
- https://git.kernel.org/stable/c/4780ec142cbb24b794129d3080eee5cac2943ffc Patch
- https://git.kernel.org/stable/c/7ca5813e1b21ef300e04593f47b073ef3217aac6 Patch
- https://git.kernel.org/stable/c/dad14d22dff1a191612acb98facceb303d0524a2 Patch
- https://git.kernel.org/stable/c/e6497e06a102870803a59570d75ed2c36d7e11b3 Patch
- https://git.kernel.org/stable/c/f1381ce0a1dd013610985e1c4260908163a427df Patch
- https://git.kernel.org/stable/c/f1535d56fc3f6c625b7e0559c006bd0318791bb1 Patch
- https://lore.kernel.org/linux-cve-announce/2026052713-CVE-2026-45873-40e6@gregkh/T
- https://nvd.nist.gov/vuln/detail/CVE-2026-45873
- https://www.cve.org/CVERecord?id=CVE-2026-45873
Change history (0)
No recorded changes yet.
CVE.org / MITRE
CISA Vulnrichment
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GitHub
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