net: sparx5: skip ptp deinit if init was skipped
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.
CVE-2026-98795
Primary source · Revision 1
Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.
Security context
Source reference: cve:CVE-2026-98795
Linux
Source reference: /containers/cna/affected/0/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Linux
Source reference: /containers/cna/affected/1/product
- Affected versions
- Not stated in this record
- Fixed versions
- Not stated in this record
- Prerequisites
- Not stated in this record
Structured affected-version data
Original package identities and version rules from this source.
[
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff",
"lessThan": "35c706d6eb1963735814c5f5bb2674a96eacf3cc",
"versionType": "git"
},
{
"status": "affected",
"version": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff",
"lessThan": "2879b65bfa548e10d59c5fba91d17f8a00cd7029",
"versionType": "git"
},
{
"status": "affected",
"version": "0933bd04047c3b96ba49545a8f91e7e6f8f666ff",
"lessThan": "0d2c49915bc3aea4521cda5e4d42f24f63b94585",
"versionType": "git"
}
],
"programFiles": [
"drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c"
],
"defaultStatus": "unaffected"
},
{
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"vendor": "Linux",
"product": "Linux",
"versions": [
{
"status": "affected",
"version": "5.18"
},
{
"status": "unaffected",
"version": "0",
"lessThan": "5.18",
"versionType": "semver"
},
{
"status": "unaffected",
"version": "6.18.56",
"versionType": "semver",
"lessThanOrEqual": "6.18.*"
},
{
"status": "unaffected",
"version": "7.2.10",
"versionType": "semver",
"lessThanOrEqual": "7.2.*"
},
{
"status": "unaffected",
"version": "7.3",
"versionType": "original_commit_for_fix",
"lessThanOrEqual": "*"
}
],
"programFiles": [
"drivers/net/ethernet/microchip/sparx5/sparx5_ptp.c"
],
"defaultStatus": "affected"
}
]- Related CVEs
- CVE-2026-98795
Source reference:
/cveMetadata/cveId
Publisher severity
No explicit severity was provided.
- Event
- #38720 · Revision 1
- Added to Heist Feed
- Publisher date