net: sparx5: skip ptp deinit if init was skipped
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 6.18.56, 7.2.10
- 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
Summary
In the Linux kernel, the following vulnerability has been resolved: net: sparx5: skip ptp deinit if init was skipped sparx5_ptp_init() returns early on the base lan969x variants because they do not have the SPX5_FEATURE_PTP flag. It also returns early when no "ptp" interrupt is described. Unbinding the driver then causes a NULL pointer dereference when cleaning up uninitialized tx_skbs queues: Unable to handle kernel NULL pointer dereference at virtual address 0000000000000008 Call trace: skb_queue_purge_reason+0x68/0x120 (P) sparx5_ptp_deinit+0x64/0xc0 mchp_sparx5_remove+0x38/0x70 platform_remove+0x20/0x30 device_remove+0x4c/0x80 Before per-port tx_skbs were added, a NULL dereference would have happened when calling ptp_clock_unregister() on the never-registered PTP clocks. Fix by returning early in sparx5_ptp_deinit() if PTP is not used.
Timeline
- CVE published
- Record last updated
Affected versions
- Linux Linux
From 0933bd04047c3b96ba49545a8f91e7e6f8f666ff · fixed in 35c706d6eb1963735814c5f5bb2674a96eacf3cc; From 0933bd04047c3b96ba49545a8f91e7e6f8f666ff · fixed in 2879b65bfa548e10d59c5fba91d17f8a00cd7029; From 0933bd04047c3b96ba49545a8f91e7e6f8f666ff · fixed in 0d2c49915bc3aea4521cda5e4d42f24f63b94585
- Linux Linux
5.18
- KernelLinux
From 5.18.0 · fixed in 6.18.56; From 6.19.0 · fixed in 7.2.10