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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2022-49928

SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed

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Status
Published
Published
Updated
Assigning organization
Linux

Description

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 sysfs_do_create_link_sd+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> dump_stack_lvl+0x34/0x44 kasan_report+0xa3/0x120 sysfs_do_create_link_sd+0x40/0xd0 rpc_sysfs_client_setup+0x161/0x1b0 rpc_new_client+0x3fc/0x6e0 rpc_create_xprt+0x71/0x220 rpc_create+0x1d4/0x350 gssp_rpc_create+0xc3/0x160 set_gssp_clnt+0xbc/0x140 write_gssp+0x116/0x1a0 proc_reg_write+0xd6/0x130 vfs_write+0x177/0x690 ksys_write+0xb9/0x150 do_syscall_64+0x35/0x80 entry_SYSCALL_64_after_hwframe+0x46/0xb0 When the xprt_switch sysfs alloc failed, should not add xprt and switch sysfs to it, otherwise, maybe null-ptr-deref; also initialize the 'xps_sysfs' to NULL to avoid oops when destroy it.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • baea99445dd4675a834e8a5987d2f368adb62e6c to < d59722d088a9d86ce6d9d39979e5d1d669d249f7affected
  • baea99445dd4675a834e8a5987d2f368adb62e6c to < 7b189b0aa8dab14b49c31c65af8a982e96e25b62affected
  • baea99445dd4675a834e8a5987d2f368adb62e6c to < cbdeaee94a415800c65a8c3fa04d9664a8b8fb3aaffected

Linux Linux

Default version status: affected

  • 5.14affected
  • 0 to < 5.14unaffected
  • 5.15.78 to ≤ 5.15.*unaffected
  • 6.0.8 to ≤ 6.0.*unaffected
  • 6.1 to ≤ *unaffected

References