CVE-2026-98857ipvs: bound LBLCR and LBLC cache growth
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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In the Linux kernel, the following vulnerability has been resolved: ipvs: bound LBLCR and LBLC cache growth ip_vs_lblcr_new() and ip_vs_lblc_new() create cache entries for every previously unseen destination address. The table max_size only tells the periodic collector to reclaim entries after the cache has already exceeded the limit. It does not reclaim entries that the attacker continues to use. Reject new cache entries once either table reaches max_size * 3 / 2. The extra headroom lets the periodic collector catch up while the existing scheduler fallback continues to use the selected destination when cache creation fails. New traffic therefore stays serviceable without growing the tables further.
- CVSS
- Not yet scored
- Weakness (CWE)
- Not given
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Linux
- NVD analysis
- Received
- Record last updated
- Oct 18, 2026
- First seen by InfoSec Signals
- Oct 18, 2026
Affected products
Linux Linux linux:linux (from the name) | from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 31028d7b970962fbeda1e9131405c76551094300; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6316d17324bd4ca400c26adb7b656c6e3447c209; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 16c83c047ecfaf226ad81d45d77fa11a3184d0e4; from 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2a3c3de660f96865f303fd25f1285f2ffbfd521d | CNA record |
References
- https://git.kernel.org/stable/c/31028d7b970962fbeda1e9131405c76551094300
- https://git.kernel.org/stable/c/6316d17324bd4ca400c26adb7b656c6e3447c209
- https://git.kernel.org/stable/c/16c83c047ecfaf226ad81d45d77fa11a3184d0e4
- https://git.kernel.org/stable/c/2a3c3de660f96865f303fd25f1285f2ffbfd521d
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.