CVE-2021-47311
net: qcom/emac: fix UAF in emac_remove
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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
- 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
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
In the Linux kernel, the following vulnerability has been resolved: net: qcom/emac: fix UAF in emac_remove adpt is netdev private data and it cannot be used after free_netdev() call. Using adpt after free_netdev() can cause UAF bug. Fix it by moving free_netdev() at the end of the function.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Linux Linux
Version range not reported
- Linux Linux
4.9
References 7
git.kernel.org
- stable/c/4d04a42b926e682140776e54188f4a44f1f01a81
- stable/c/b1e091331920f8fbfc747dcbd16263fcd71abb2d
- stable/c/11e9d163d631198bb3eb41a677a61b499516c0f7
- stable/c/2b70ca92847c619d6264c7372ef74fcbfd1e048c
- stable/c/b560521eca03d0a2db6093a5a632cbdd0a0cf833
- stable/c/8a225a6e07a57a1538d53637cb3d82bd3e477839
- stable/c/ad297cd2db8953e2202970e9504cab247b6c7cb4