smb/client: fix out-of-bounds read in smb2_compound_op()
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.6.140, 6.12.88, 6.18.30, 7.0.7
- 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: smb/client: fix out-of-bounds read in smb2_compound_op() If a server sends a truncated response but a large OutputBufferLength, and terminates the EA list early, check_wsl_eas() returns success without validating that the entire OutputBufferLength fits within iov_len. Then smb2_compound_op() does: memcpy(idata->wsl.eas, data[0], size[0]); Where size[0] is OutputBufferLength. If iov_len is smaller than size[0], memcpy can read beyond the end of the rsp_iov allocation and leak adjacent kernel heap memory.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
From 7449d736bbbd160c76b01b8fcdf72f58a8757d4b · fixed in dffb44b2e06a2908e249f0f93156fc987eee1d1c; From ea41367b2a602f602ea6594fc4a310520dcc64f4 · fixed in 9b3af35645ff9cd334edc130249f9a2fb2bea25f; From ea41367b2a602f602ea6594fc4a310520dcc64f4 · fixed in 512d33bc8ea4ea5c19728ee118715f4b1f4d1926; From ea41367b2a602f602ea6594fc4a310520dcc64f4 · fixed in a16f70a71be4b5a4eccf39a9bf09b47285f4cb7c; From ea41367b2a602f602ea6594fc4a310520dcc64f4 · fixed in 8d09328dfda089675e4c049f3f256064a1d1996b; From 6.6.32 · fixed in 6.6.140
- Linux Linux
6.9
- KernelLinux
fixed in 6.6.140; From 6.7.0 · fixed in 6.12.88; From 6.9.0 · fixed in 6.18.30; From 6.13.0 · fixed in 7.0.7