CVE-2024-46795

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-46795
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-46795.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-46795
Related
Published
2024-09-18T08:15:06Z
Modified
2024-10-03T20:48:19.643695Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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

ksmbd: unset the binding mark of a reused connection

Steve French reported null pointer dereference error from sha256 lib. cifs.ko can send session setup requests on reused connection. If reused connection is used for binding session, conn->binding can still remain true and generatepreauthhash() will not set sess->PreauthHashValue and it will be NULL. It is used as a material to create an encryption key in ksmbdgensmb311encryptionkey. ->PreauthHashValue cause null pointer dereference error from cryptoshash_update().

BUG: kernel NULL pointer dereference, address: 0000000000000000

PF: supervisor read access in kernel mode

PF: error_code(0x0000) - not-present page

PGD 0 P4D 0 Oops: 0000 [#1] PREEMPT SMP PTI CPU: 8 PID: 429254 Comm: kworker/8:39 Hardware name: LENOVO 20MAS08500/20MAS08500, BIOS N2CET69W (1.52 ) Workqueue: ksmbd-io handleksmbdwork [ksmbd] RIP: 0010:libsha256basedoupdate.isra.0+0x11e/0x1d0 [sha256ssse3] <TASK> ? showregs+0x6d/0x80 ? _die+0x24/0x80 ? pagefaultoops+0x99/0x1b0 ? douseraddrfault+0x2ee/0x6b0 ? excpagefault+0x83/0x1b0 ? asmexcpagefault+0x27/0x30 ? _pfxsha256transformrorx+0x10/0x10 [sha256ssse3] ? libsha256basedoupdate.isra.0+0x11e/0x1d0 [sha256ssse3] ? _pfxsha256transformrorx+0x10/0x10 [sha256ssse3] ? _pfxsha256transformrorx+0x10/0x10 [sha256ssse3] _sha256update+0x77/0xa0 [sha256ssse3] sha256avx2update+0x15/0x30 [sha256ssse3] cryptoshashupdate+0x1e/0x40 hmacupdate+0x12/0x20 cryptoshashupdate+0x1e/0x40 generatekey+0x234/0x380 [ksmbd] generatesmb3encryptionkey+0x40/0x1c0 [ksmbd] ksmbdgensmb311encryptionkey+0x72/0xa0 [ksmbd] ntlmauthenticate.isra.0+0x423/0x5d0 [ksmbd] smb2sesssetup+0x952/0xaa0 [ksmbd] _processrequest+0xa3/0x1d0 [ksmbd] _handleksmbdwork+0x1c4/0x2f0 [ksmbd] handleksmbdwork+0x2d/0xa0 [ksmbd] processonework+0x16c/0x350 workerthread+0x306/0x440 ? _pfxworkerthread+0x10/0x10 kthread+0xef/0x120 ? _pfxkthread+0x10/0x10 retfromfork+0x44/0x70 ? _pfxkthread+0x10/0x10 retfromfork_asm+0x1b/0x30 </TASK>

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
6.1.112-1

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

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
6.10.11-1

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
6.3.1-1~exp1
6.3.2-1~exp1
6.3.4-1~exp1
6.3.5-1~exp1
6.3.7-1~bpo12+1
6.3.7-1
6.3.11-1
6.4~rc6-1~exp1
6.4~rc7-1~exp1
6.4.1-1~exp1
6.4.4-1~bpo12+1
6.4.4-1
6.4.4-2
6.4.4-3~bpo12+1
6.4.4-3
6.4.11-1
6.4.13-1
6.5~rc4-1~exp1
6.5~rc6-1~exp1
6.5~rc7-1~exp1
6.5.1-1~exp1
6.5.3-1~bpo12+1
6.5.3-1
6.5.6-1
6.5.8-1
6.5.10-1~bpo12+1
6.5.10-1
6.5.13-1
6.6.3-1~exp1
6.6.4-1~exp1
6.6.7-1~exp1
6.6.8-1
6.6.9-1
6.6.11-1
6.6.13-1~bpo12+1
6.6.13-1
6.6.15-1
6.6.15-2
6.7-1~exp1
6.7.1-1~exp1
6.7.4-1~exp1
6.7.7-1
6.7.9-1
6.7.9-2
6.7.12-1~bpo12+1
6.7.12-1
6.8.9-1
6.8.11-1
6.8.12-1~bpo12+1
6.8.12-1
6.9.2-1~exp1
6.9.7-1~bpo12+1
6.9.7-1
6.9.8-1
6.9.9-1
6.9.10-1~bpo12+1
6.9.10-1
6.9.11-1
6.9.12-1
6.10-1~exp1
6.10.1-1~exp1
6.10.3-1
6.10.4-1
6.10.6-1~bpo12+1
6.10.6-1
6.10.7-1
6.10.9-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}