{"id":"DEBIAN-CVE-2022-50699","details":"In the Linux kernel, the following vulnerability has been resolved:  selinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context()  The following warning was triggered on a hardware environment:    SELinux: Converting 162 SID table entries...   BUG: sleeping function called from invalid context at        __might_sleep+0x60/0x74 0x0   in_atomic(): 1, irqs_disabled(): 128, non_block: 0, pid: 5943, name: tar   CPU: 7 PID: 5943 Comm: tar Tainted: P O 5.10.0 #1   Call trace:    dump_backtrace+0x0/0x1c8    show_stack+0x18/0x28    dump_stack+0xe8/0x15c    ___might_sleep+0x168/0x17c    __might_sleep+0x60/0x74    __kmalloc_track_caller+0xa0/0x7dc    kstrdup+0x54/0xac    convert_context+0x48/0x2e4    sidtab_context_to_sid+0x1c4/0x36c    security_context_to_sid_core+0x168/0x238    security_context_to_sid_default+0x14/0x24    inode_doinit_use_xattr+0x164/0x1e4    inode_doinit_with_dentry+0x1c0/0x488    selinux_d_instantiate+0x20/0x34    security_d_instantiate+0x70/0xbc    d_splice_alias+0x4c/0x3c0    ext4_lookup+0x1d8/0x200 [ext4]    __lookup_slow+0x12c/0x1e4    walk_component+0x100/0x200    path_lookupat+0x88/0x118    filename_lookup+0x98/0x130    user_path_at_empty+0x48/0x60    vfs_statx+0x84/0x140    vfs_fstatat+0x20/0x30    __se_sys_newfstatat+0x30/0x74    __arm64_sys_newfstatat+0x1c/0x2c    el0_svc_common.constprop.0+0x100/0x184    do_el0_svc+0x1c/0x2c    el0_svc+0x20/0x34    el0_sync_handler+0x80/0x17c    el0_sync+0x13c/0x140   SELinux: Context system_u:object_r:pssp_rsyslog_log_t:s0:c0 is            not valid (left unmapped).  It was found that within a critical section of spin_lock_irqsave in sidtab_context_to_sid(), convert_context() (hooked by sidtab_convert_params.func) might cause the process to sleep via allocating memory with GFP_KERNEL, which is problematic.  As Ondrej pointed out [1], convert_context()/sidtab_convert_params.func has another caller sidtab_convert_tree(), which is okay with GFP_KERNEL. Therefore, fix this problem by adding a gfp_t argument for convert_context()/sidtab_convert_params.func and pass GFP_KERNEL/_ATOMIC properly in individual callers.  [PM: wrap long BUG() output lines, tweak subject line]","modified":"2026-09-01T16:05:36.118689581Z","published":"2025-12-24T11:15:50.050Z","upstream":["CVE-2022-50699"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2022-50699"}],"affected":[{"package":{"name":"linux","ecosystem":"Debian:12","purl":"pkg:deb/debian/linux?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50699.json"}},{"package":{"name":"linux","ecosystem":"Debian:13","purl":"pkg:deb/debian/linux?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50699.json"}},{"package":{"name":"linux","ecosystem":"Debian:14","purl":"pkg:deb/debian/linux?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"6.0.6-1"}]}],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2022-50699.json"}}],"schema_version":"1.9.0"}