Description (CNA)
In the Linux kernel, the following vulnerability has been resolved: netfilter: bpf: reject invalid NAT manipulation types As bpf_ct_set_nat_info() is not validating the NAT manipulation type a wrong value can be passed directly to nf_nat_setup_info(). This triggers the WARN_ON() at nf_nat_setup_info() and if panic_on_warn isn't set, then IPS_SRC_NAT_DONE is set without adding nat_bysource and conntrack cleanup tries to unlink an uninitialized hlist node. Fix this by checking that NAT manipulation type is correct before calling nf_nat_setup_info(). In addition, if the WARN_ON is hit, return NF_DROP instead of continuing with the processing to avoid similar situations in the future.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 before 752492947be3123ea6c689e2f93ae04ecd675d42; affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 before ea777dc90ab37e64fa4b92f6fcf3b5edcef5e058; affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 before f6143ae109df56d51d5536e813deb19eee7a6205; affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 before 58108f05b0502448f6bb612ee2eccc63bd6449cb; affected 0fabd2aa199faeb8754aee94658f2c48ccb2c8c3 before 16d464013ec2267b00a83f4bfbb97b3ecc63bfa7 |
| Linux / Linux | affected 6.1; unaffected 0 before 6.1; 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/752492947be3123ea6c689e2f93ae04ecd675d42
- https://git.kernel.org/stable/c/ea777dc90ab37e64fa4b92f6fcf3b5edcef5e058
- https://git.kernel.org/stable/c/f6143ae109df56d51d5536e813deb19eee7a6205
- https://git.kernel.org/stable/c/58108f05b0502448f6bb612ee2eccc63bd6449cb
- https://git.kernel.org/stable/c/16d464013ec2267b00a83f4bfbb97b3ecc63bfa7