CVE-2026-52998
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
netfilter: nfnetlink_osf: fix potential NULL dereference in ttl check
In the Linux kernel, the following vulnerability has been resolved: netfilter: nfnetlink_osf: fix potential NULL dereference in ttl check The nf_osf_ttl() function accessed skb->dev to perform a local interface address lookup without verifying that the device pointer was valid. Additionally, the implementation utilized an in_dev_for_each_ifa_rcu loop to match the packet source address against local interface addresses. It assumed that packets from the same subnet should not see a decrement on the initial TTL. A packet might appear it is from the same subnet but it actually isn't especially in modern environments with containers and virtual switching. Remove the device dereference and interface loop. Replace the logic with a switch statement that evaluates the TTL according to the ttl_check.
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) |
|---|---|---|---|---|---|
| 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 | affected | git | f4de0777e4554a7de19c920accde6319dd530782 | Unavailable | None listed |
| 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 | affected | git | c996a90f3071cf43683e5423da31aadbe002b8b4 | Unavailable | None listed |
| 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 | affected | git | edc806f9122961f0d3819f7c69c14cccde31f277 | Unavailable | None listed |
| 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 | affected | git | 5d05de2f0928d81309a815ecc76d1a3ad72cbc16 | Unavailable | None listed |
| 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 | affected | git | 95be653a76793856ff8b2d8bd82c2943c23f5ca8 | Unavailable | None listed |
| 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 | affected | git | 79b90a96688e521771fa6ed3dc7864b76b8df293 | Unavailable | None listed |
| 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 | affected | git | 83fc5dd63455a779ea2dd0f7ffee3c920919d80b | Unavailable | None listed |
| 11eeef41d5f63c7d2f7fdfcc733eb7fb137cc384 | affected | git | 711987ba281fd806322a7cd244e98e2a81903114 | 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) |
|---|---|---|---|---|---|
| 2.6.31 | affected | Unavailable | Unavailable | Unavailable | None listed |
| 0 | unaffected | semver | 2.6.31 | Unavailable | None listed |
| 5.10.258 | unaffected | semver | Unavailable | 5.10.* | None listed |
| 5.15.209 | unaffected | semver | Unavailable | 5.15.* | None listed |
| 6.1.175 | unaffected | semver | Unavailable | 6.1.* | None listed |
| 6.6.141 | unaffected | semver | Unavailable | 6.6.* | None listed |
| 6.12.91 | unaffected | semver | Unavailable | 6.12.* | None listed |
| 6.18.33 | unaffected | semver | Unavailable | 6.18.* | None listed |
| 7.0.10 | unaffected | semver | Unavailable | 7.0.* | None listed |
| 7.1 | unaffected | original_commit_for_fix | Unavailable | * | None listed |