sunrpc: fix null pointer dereference on zero-length checksum
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 6.6.112, 6.12.53, 6.17.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: yes
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: sunrpc: fix null pointer dereference on zero-length checksum In xdr_stream_decode_opaque_auth(), zero-length checksum.len causes checksum.data to be set to NULL. This triggers a NPD when accessing checksum.data in gss_krb5_verify_mic_v2(). This patch ensures that the value of checksum.len is not less than XDR_UNIT.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 0653028e8f1c97fec30710813a001ad8a2ec34f4 · fixed in 81cec07d303186d0d8c623ef8b5ecd3b81e94cf6; From 0653028e8f1c97fec30710813a001ad8a2ec34f4 · fixed in affc03d44921f493deaae1d33151e3067a6f9f8f; From 0653028e8f1c97fec30710813a001ad8a2ec34f4 · fixed in ab9a70cd2386a0d70c164b0905dd66bc9af52e77; From 0653028e8f1c97fec30710813a001ad8a2ec34f4 · fixed in 6df164e29bd4e6505c5a2e0e5f1e1f6957a16a42
- Linux Linux
6.3
- KernelLinux
From 6.3.0 · fixed in 6.6.112; From 6.7.0 · fixed in 6.12.53; From 6.13.0 · fixed in 6.17.3