net: drv: netdevsim: don't napi_complete() from netpoll
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.12.34, 6.15.3
- 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: no
- Technical impact: total
Summary
In the Linux kernel, the following vulnerability has been resolved: net: drv: netdevsim: don't napi_complete() from netpoll netdevsim supports netpoll. Make sure we don't call napi_complete() from it, since it may not be scheduled. Breno reports hitting a warning in napi_complete_done(): WARNING: CPU: 14 PID: 104 at net/core/dev.c:6592 napi_complete_done+0x2cc/0x560 __napi_poll+0x2d8/0x3a0 handle_softirqs+0x1fe/0x710 This is presumably after netpoll stole the SCHED bit prematurely.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- Linux Linux
From 3762ec05a9fbda16aaaa2568df679ab8ad13f38d · fixed in a8ff2e362d901200a1075c3ca9c56d9c7bbef389; From 3762ec05a9fbda16aaaa2568df679ab8ad13f38d · fixed in 6837dd877270c57689bd866de9f3de14172c2439; From 3762ec05a9fbda16aaaa2568df679ab8ad13f38d · fixed in 1264971017b4d7141352a7fe29021bdfce5d885d
- Linux Linux
6.10
- KernelLinux
From 6.10.0 · fixed in 6.12.34; From 6.13.0 · fixed in 6.15.3