CVE-2022-49110
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2022
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
netfilter: conntrack: revisit gc autotuning
In the Linux kernel, the following vulnerability has been resolved: netfilter: conntrack: revisit gc autotuning as of commit 4608fdfc07e1 ("netfilter: conntrack: collect all entries in one cycle") conntrack gc was changed to run every 2 minutes. On systems where conntrack hash table is set to large value, most evictions happen from gc worker rather than the packet path due to hash table distribution. This causes netlink event overflows when events are collected. This change collects average expiry of scanned entries and reschedules to the average remaining value, within 1 to 60 second interval. To avoid event overflows, reschedule after each bucket and add a limit for both run time and number of evictions per run. If more entries have to be evicted, reschedule and restart 1 jiffy into the future.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
unaffected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4608fdfc07e116f9fc0895beb40abad7cdb5ee3d | affected | git | 58d52743ae85d28c9335c6034d6ce350b8689951 | Unavailable | None listed |
| 4608fdfc07e116f9fc0895beb40abad7cdb5ee3d | affected | git | 7cd361d5e6d986c0d4cafb9ceaa803359048ae15 | Unavailable | None listed |
| 4608fdfc07e116f9fc0895beb40abad7cdb5ee3d | affected | git | 592e57591826f3d09c28d755a39ea8e9d13705ad | Unavailable | None listed |
| 4608fdfc07e116f9fc0895beb40abad7cdb5ee3d | affected | git | 2cfadb761d3d0219412fd8150faea60c7e863833 | Unavailable | None listed |
| dafc95a1e473a0b857af34ecbb17b8b1c90edd75 | affected | git | Unavailable | Unavailable | None listed |
| 5892f910f401c1facfc410e0b042108f2827a77b | affected | git | Unavailable | Unavailable | None listed |
| f68ad168e23565ce2a3891fec537cfaf8410d1e6 | affected | git | Unavailable | Unavailable | None listed |
| 7aa03980b21fdc7355e20274a68a69a0b2a45c08 | affected | git | Unavailable | Unavailable | None listed |
| 4.19.206 | affected | semver | 4.20 | Unavailable | None listed |
| 5.4.144 | affected | semver | 5.5 | Unavailable | None listed |
| 5.10.62 | affected | semver | 5.11 | Unavailable | None listed |
| 5.13.14 | affected | semver | 5.14 | Unavailable | None listed |
Linux
- Vendor
- Linux
- Product
- Linux
- Platforms
- Unknown
- Default status
affected
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 5.14 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 5.14 | Unavailable | None listed |
| 5.15.34 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 5.16.20 | unaffected | semver | Unavailable | 5.16.* | None listed |
| 5.17.3 | unaffected | semver | Unavailable | 5.17.* | None listed |
| 5.18 | unaffected | original_commit_for_fix | Unavailable | * | None listed |