CVE-2022-49928
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2022-49928
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49928.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2022-49928
- Downstream
- Related
- Published
- 2025-05-01T14:11:06Z
- Modified
- 2025-10-21T12:02:38.114634Z
- Severity
-
- 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed
There is a null-ptr-deref when xps sysfs alloc failed: BUG: KASAN: null-ptr-deref in sysfsdocreatelinksd+0x40/0xd0 Read of size 8 at addr 0000000000000030 by task gssproxy/457
CPU: 5 PID: 457 Comm: gssproxy Not tainted 6.0.0-09040-g02357b27ee03 #9 Call Trace: <TASK> dumpstacklvl+0x34/0x44 kasanreport+0xa3/0x120 sysfsdocreatelinksd+0x40/0xd0 rpcsysfsclientsetup+0x161/0x1b0 rpcnewclient+0x3fc/0x6e0 rpccreatexprt+0x71/0x220 rpccreate+0x1d4/0x350 gssprpccreate+0xc3/0x160 setgsspclnt+0xbc/0x140 writegssp+0x116/0x1a0 procregwrite+0xd6/0x130 vfswrite+0x177/0x690 ksyswrite+0xb9/0x150 dosyscall64+0x35/0x80 entrySYSCALL64afterhwframe+0x46/0xb0
When the xprtswitch sysfs alloc failed, should not add xprt and switch sysfs to it, otherwise, maybe null-ptr-deref; also initialize the 'xpssysfs' to NULL to avoid oops when destroy it.
- References
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedbaea99445dd4675a834e8a5987d2f368adb62e6cFixedd59722d088a9d86ce6d9d39979e5d1d669d249f7
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedbaea99445dd4675a834e8a5987d2f368adb62e6cFixed7b189b0aa8dab14b49c31c65af8a982e96e25b62
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introducedbaea99445dd4675a834e8a5987d2f368adb62e6cFixedcbdeaee94a415800c65a8c3fa04d9664a8b8fb3a