libceph: fix invalid accesses to ceph_connection_v1_info
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 5.15.194, 6.1.153, 6.6.107, 6.12.48, 6.16.8
- 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: total
Summary
In the Linux kernel, the following vulnerability has been resolved: libceph: fix invalid accesses to ceph_connection_v1_info There is a place where generic code in messenger.c is reading and another place where it is writing to con->v1 union member without checking that the union member is active (i.e. msgr1 is in use). On 64-bit systems, con->v1.auth_retry overlaps with con->v2.out_iter, so such a read is almost guaranteed to return a bogus value instead of 0 when msgr2 is in use. This ends up being fairly benign because the side effect is just the invalidation of the authorizer and successive fetching of new tickets. con->v1.connect_seq overlaps with con->v2.conn_bufs and the fact that it's being written to can cause more serious consequences, but luckily it's not something that happens often.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From cd1a677cad994021b19665ed476aea63f5d54f31 · fixed in ea12ab684f8ae8a6da11a22c78d94a79e2163096; From cd1a677cad994021b19665ed476aea63f5d54f31 · fixed in 591ea9c30737663a471b2bb07b27ddde86b020d5; From cd1a677cad994021b19665ed476aea63f5d54f31 · fixed in 23538cfbeed87159a5ac6c61e7a6de3d8d4486a8; From cd1a677cad994021b19665ed476aea63f5d54f31 · fixed in 35dbbc3dbf8bccb2d77c68444f42c1e6d2d27983; From cd1a677cad994021b19665ed476aea63f5d54f31 · fixed in 6bd8b56899be0b514945f639a89ccafb8f8dfaef; From cd1a677cad994021b19665ed476aea63f5d54f31 · fixed in cdbc9836c7afadad68f374791738f118263c5371
- Linux Linux
5.11
- KernelLinux
From 5.11.0 · fixed in 5.15.194; From 5.16.0 · fixed in 6.1.153; From 6.2.0 · fixed in 6.6.107; From 6.7.0 · fixed in 6.12.48; From 6.13.0 · fixed in 6.16.8