{"id":"CVE-2022-49928","summary":"SUNRPC: Fix null-ptr-deref when xps sysfs alloc failed","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nSUNRPC: Fix null-ptr-deref when xps sysfs alloc failed\n\nThere is a null-ptr-deref when xps sysfs alloc failed:\n  BUG: KASAN: null-ptr-deref in sysfs_do_create_link_sd+0x40/0xd0\n  Read of size 8 at addr 0000000000000030 by task gssproxy/457\n\n  CPU: 5 PID: 457 Comm: gssproxy Not tainted 6.0.0-09040-g02357b27ee03 #9\n  Call Trace:\n   \u003cTASK\u003e\n   dump_stack_lvl+0x34/0x44\n   kasan_report+0xa3/0x120\n   sysfs_do_create_link_sd+0x40/0xd0\n   rpc_sysfs_client_setup+0x161/0x1b0\n   rpc_new_client+0x3fc/0x6e0\n   rpc_create_xprt+0x71/0x220\n   rpc_create+0x1d4/0x350\n   gssp_rpc_create+0xc3/0x160\n   set_gssp_clnt+0xbc/0x140\n   write_gssp+0x116/0x1a0\n   proc_reg_write+0xd6/0x130\n   vfs_write+0x177/0x690\n   ksys_write+0xb9/0x150\n   do_syscall_64+0x35/0x80\n   entry_SYSCALL_64_after_hwframe+0x46/0xb0\n\nWhen the xprt_switch sysfs alloc failed, should not add xprt and\nswitch sysfs to it, otherwise, maybe null-ptr-deref; also initialize\nthe 'xps_sysfs' to NULL to avoid oops when destroy it.","modified":"2026-04-03T13:14:25.852625Z","published":"2025-05-01T14:11:06.068Z","related":["SUSE-SU-2025:01918-1","SUSE-SU-2025:01966-1","SUSE-SU-2025:02173-1","SUSE-SU-2025:02262-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49928.json","cna_assigner":"Linux"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/7b189b0aa8dab14b49c31c65af8a982e96e25b62"},{"type":"WEB","url":"https://git.kernel.org/stable/c/cbdeaee94a415800c65a8c3fa04d9664a8b8fb3a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d59722d088a9d86ce6d9d39979e5d1d669d249f7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/49xxx/CVE-2022-49928.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-49928"},{"type":"PACKAGE","url":"https://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":[{"introduced":"baea99445dd4675a834e8a5987d2f368adb62e6c"},{"fixed":"d59722d088a9d86ce6d9d39979e5d1d669d249f7"},{"fixed":"7b189b0aa8dab14b49c31c65af8a982e96e25b62"},{"fixed":"cbdeaee94a415800c65a8c3fa04d9664a8b8fb3a"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-49928.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"}]}