Description (CNA)
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.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before bc9ff8e64771cc32a216953fe615386f46ac1eaa; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 31028d7b970962fbeda1e9131405c76551094300; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 6316d17324bd4ca400c26adb7b656c6e3447c209; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 16c83c047ecfaf226ad81d45d77fa11a3184d0e4; affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 before 2a3c3de660f96865f303fd25f1285f2ffbfd521d |
| Linux / Linux | affected 2.6.12; unaffected 0 before 2.6.12; unaffected 6.6.160 through 6.6.*; unaffected 6.12.113 through 6.12.*; unaffected 6.18.56 through 6.18.*; unaffected 7.2.10 through 7.2.*; unaffected 7.3 through * |
CWE
No CWE identifiers supplied.
References
- https://git.kernel.org/stable/c/bc9ff8e64771cc32a216953fe615386f46ac1eaa
- 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