DEBIAN-CVE-2025-37742

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Source
https://security-tracker.debian.org/tracker/DEBIAN-CVE-2025-37742
Import Source
https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2025-37742.json
JSON Data
https://api.test.osv.dev/v1/vulns/DEBIAN-CVE-2025-37742
Upstream
Published
2025-05-01T13:15:52Z
Modified
2025-09-19T07:34:33.983652Z
Summary
[none]
Details

In the Linux kernel, the following vulnerability has been resolved: jfs: Fix uninit-value access of imap allocated in the diMount() function syzbot reports that hexdumptobuffer is using uninit-value: ===================================================== BUG: KMSAN: uninit-value in hexdumptobuffer+0x888/0x1100 lib/hexdump.c:171 hexdumptobuffer+0x888/0x1100 lib/hexdump.c:171 printhexdump+0x13d/0x3e0 lib/hexdump.c:276 diFree+0x5ba/0x4350 fs/jfs/jfsimap.c:876 jfsevictinode+0x510/0x550 fs/jfs/inode.c:156 evict+0x723/0xd10 fs/inode.c:796 iputfinal fs/inode.c:1946 [inline] iput+0x97b/0xdb0 fs/inode.c:1972 txUpdateMap+0xf3e/0x1150 fs/jfs/jfstxnmgr.c:2367 txLazyCommit fs/jfs/jfstxnmgr.c:2664 [inline] jfslazycommit+0x627/0x11d0 fs/jfs/jfstxnmgr.c:2733 kthread+0x6b9/0xef0 kernel/kthread.c:464 retfromfork+0x6d/0x90 arch/x86/kernel/process.c:148 retfromforkasm+0x1a/0x30 arch/x86/entry/entry64.S:244 Uninit was created at: slabpostallochook mm/slub.c:4121 [inline] slaballocnode mm/slub.c:4164 [inline] _kmalloccachenoprof+0x8e3/0xdf0 mm/slub.c:4320 kmallocnoprof include/linux/slab.h:901 [inline] diMount+0x61/0x7f0 fs/jfs/jfsimap.c:105 jfsmount+0xa8e/0x11d0 fs/jfs/jfsmount.c:176 jfsfillsuper+0xa47/0x17c0 fs/jfs/super.c:523 gettreebdevflags+0x6ec/0x910 fs/super.c:1636 gettreebdev+0x37/0x50 fs/super.c:1659 jfsgettree+0x34/0x40 fs/jfs/super.c:635 vfsgettree+0xb1/0x5a0 fs/super.c:1814 donewmount+0x71f/0x15e0 fs/namespace.c:3560 pathmount+0x742/0x1f10 fs/namespace.c:3887 domount fs/namespace.c:3900 [inline] _dosysmount fs/namespace.c:4111 [inline] _sesysmount+0x71f/0x800 fs/namespace.c:4088 _x64sysmount+0xe4/0x150 fs/namespace.c:4088 x64syscall+0x39bf/0x3c30 arch/x86/include/generated/asm/syscalls64.h:166 dosyscallx64 arch/x86/entry/common.c:52 [inline] dosyscall64+0xcd/0x1e0 arch/x86/entry/common.c:83 entrySYSCALL64afterhwframe+0x77/0x7f ===================================================== The reason is that imap is not properly initialized after memory allocation. It will cause the snprintf() function to write uninitialized data into linebuf within hexdumpto_buffer(). Fix this by using kzalloc instead of kmalloc to clear its content at the beginning in diMount().

References

Affected packages

Debian:12 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.135-1

Affected versions

6.*

6.1.27-1
6.1.37-1
6.1.38-1
6.1.38-2~bpo11+1
6.1.38-2
6.1.38-3
6.1.38-4~bpo11+1
6.1.38-4
6.1.52-1
6.1.55-1~bpo11+1
6.1.55-1
6.1.64-1
6.1.66-1
6.1.67-1
6.1.69-1~bpo11+1
6.1.69-1
6.1.76-1~bpo11+1
6.1.76-1
6.1.82-1
6.1.85-1
6.1.90-1~bpo11+1
6.1.90-1
6.1.94-1~bpo11+1
6.1.94-1
6.1.98-1
6.1.99-1
6.1.106-1
6.1.106-2
6.1.106-3
6.1.112-1
6.1.115-1
6.1.119-1
6.1.123-1
6.1.124-1
6.1.128-1
6.1.129-1
6.1.133-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:13 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.12.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:14 / linux

Package

Name
linux
Purl
pkg:deb/debian/linux?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.12.25-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Debian:11 / linux-6.1

Package

Name
linux-6.1
Purl
pkg:deb/debian/linux-6.1?arch=source

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
6.1.137-1~deb11u1

Affected versions

6.*

6.1.106-3~deb11u1
6.1.106-3~deb11u2
6.1.106-3~deb11u3
6.1.112-1~deb11u1
6.1.119-1~deb11u1
6.1.128-1~deb11u1
6.1.129-1~deb11u1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}