CVE-2022-50497

binfmt_misc: fix shift-out-of-bounds in check_special_flags

State: Published
Severity: Not scored
Published: Oct 4, 2025
Updated: May 11, 2026
Reserved: Oct 4, 2025

Description

In the Linux kernel, the following vulnerability has been resolved:

binfmt_misc: fix shift-out-of-bounds in check_special_flags

UBSAN reported a shift-out-of-bounds warning:

left shift of 1 by 31 places cannot be represented in type 'int' Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x8d/0xcf lib/dump_stack.c:106 ubsan_epilogue+0xa/0x44 lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds+0x1e7/0x208 lib/ubsan.c:322 check_special_flags fs/binfmt_misc.c:241 [inline] create_entry fs/binfmt_misc.c:456 [inline] bm_register_write+0x9d3/0xa20 fs/binfmt_misc.c:654 vfs_write+0x11e/0x580 fs/read_write.c:582 ksys_write+0xcf/0x120 fs/read_write.c:637 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x34/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x4194e1

Since the type of Node's flags is unsigned long, we should define these macros with same type too.

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0f1a48994b3e516d5c7fd5d12204fdba7a604771Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before ea6145370be8016755c43aca799815fc4b8c88b1Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 97382a2639b1cd9631f6069061e9d7062cd2b098Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 419b808504c26b3e3342365f34ccd0843e09a7f8Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before dcbc51d31d0afbd45e830e3cf565a7b3ca7bf0d8Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 88cea1676a09f7c45a1438153a126610c33b1590Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before a651bb5ff997b9f02662bcdef3d8b4e6f0d79656Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before a91123d4bda463469f68f0427adabf8108001f94Affected 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 6a46bf558803dd2b959ca7435a5c143efe837217Affected
LinuxLinux	2.6.12Affected before 2.6.12Not affected 4.9.337 through 4.9.Not affected 4.14.303 through 4.14.Not affected 4.19.270 through 4.19.Not affected 5.4.229 through 5.4.Not affected 5.10.163 through 5.10.Not affected 5.15.86 through 5.15.Not affected 6.0.16 through 6.0.Not affected 6.1.2 through 6.1.Not affected 6.2 and laterNot affected

Product

Versions

LinuxLinux

1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 0f1a48994b3e516d5c7fd5d12204fdba7a604771Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before ea6145370be8016755c43aca799815fc4b8c88b1Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 97382a2639b1cd9631f6069061e9d7062cd2b098Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 419b808504c26b3e3342365f34ccd0843e09a7f8Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before dcbc51d31d0afbd45e830e3cf565a7b3ca7bf0d8Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 88cea1676a09f7c45a1438153a126610c33b1590Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before a651bb5ff997b9f02662bcdef3d8b4e6f0d79656Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before a91123d4bda463469f68f0427adabf8108001f94Affected
1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 to before 6a46bf558803dd2b959ca7435a5c143efe837217Affected

LinuxLinux

2.6.12Affected
before 2.6.12Not affected
4.9.337 through 4.9.*Not affected
4.14.303 through 4.14.*Not affected
4.19.270 through 4.19.*Not affected
5.4.229 through 5.4.*Not affected
5.10.163 through 5.10.*Not affected
5.15.86 through 5.15.*Not affected
6.0.16 through 6.0.*Not affected
6.1.2 through 6.1.*Not affected
6.2 and laterNot affected

References

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