CVE-2024-26636

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Source
https://nvd.nist.gov/vuln/detail/CVE-2024-26636
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2024-26636.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2024-26636
Related
Published
2024-03-18T11:15:10Z
Modified
2024-09-18T03:26:00.088606Z
Summary
[none]
Details

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

llc: make llcuisendmsg() more robust against bonding changes

syzbot was able to trick llcuisendmsg(), allocating an skb with no headroom, but subsequently trying to push 14 bytes of Ethernet header [1]

Like some others, llcuisendmsg() releases the socket lock before calling sockallocsend_skb(). Then it acquires it again, but does not redo all the sanity checks that were performed.

This fix:

  • Uses LLRESERVEDSPACE() to reserve space.
  • Check all conditions again after socket lock is held again.
  • Do not account Ethernet header for mtu limitation.

[1]

skbuff: skbunderpanic: text:ffff800088baa334 len:1514 put:14 head:ffff0000c9c37000 data:ffff0000c9c36ff2 tail:0x5dc end:0x6c0 dev:bond0

kernel BUG at net/core/skbuff.c:193 ! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 6875 Comm: syz-executor.0 Not tainted 6.7.0-rc8-syzkaller-00101-g0802e17d9aca-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : skbpanic net/core/skbuff.c:189 [inline] pc : skbunderpanic+0x13c/0x140 net/core/skbuff.c:203 lr : skbpanic net/core/skbuff.c:189 [inline] lr : skbunderpanic+0x13c/0x140 net/core/skbuff.c:203 sp : ffff800096f97000 x29: ffff800096f97010 x28: ffff80008cc8d668 x27: dfff800000000000 x26: ffff0000cb970c90 x25: 00000000000005dc x24: ffff0000c9c36ff2 x23: ffff0000c9c37000 x22: 00000000000005ea x21: 00000000000006c0 x20: 000000000000000e x19: ffff800088baa334 x18: 1fffe000368261ce x17: ffff80008e4ed000 x16: ffff80008a8310f8 x15: 0000000000000001 x14: 1ffff00012df2d58 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000ff0100 x9 : e28a51f1087e8400 x8 : e28a51f1087e8400 x7 : ffff80008028f8d0 x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : ffff800082b78714 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000089 Call trace: skbpanic net/core/skbuff.c:189 [inline] skbunderpanic+0x13c/0x140 net/core/skbuff.c:203 skbpush+0xf0/0x108 net/core/skbuff.c:2451 ethheader+0x44/0x1f8 net/ethernet/eth.c:83 devhardheader include/linux/netdevice.h:3188 [inline] llcmachdrinit+0x110/0x17c net/llc/llcoutput.c:33 llcsapactionsendxidc+0x170/0x344 net/llc/llcsac.c:85 llcexecsaptransactions net/llc/llcsap.c:153 [inline] llcsapnextstate net/llc/llcsap.c:182 [inline] llcsapstateprocess+0x1ec/0x774 net/llc/llcsap.c:209 llcbuildandsendxidpkt+0x12c/0x1c0 net/llc/llcsap.c:270 llcuisendmsg+0x7bc/0xb1c net/llc/afllc.c:997 socksendmsgnosec net/socket.c:730 [inline] _socksendmsg net/socket.c:745 [inline] socksendmsg+0x194/0x274 net/socket.c:767 splicetosocket+0x7cc/0xd58 fs/splice.c:881 dosplicefrom fs/splice.c:933 [inline] directspliceactor+0xe4/0x1c0 fs/splice.c:1142 splicedirecttoactor+0x2a0/0x7e4 fs/splice.c:1088 dosplicedirect+0x20c/0x348 fs/splice.c:1194 dosendfile+0x4bc/0xc70 fs/readwrite.c:1254 _dosyssendfile64 fs/readwrite.c:1322 [inline] _sesyssendfile64 fs/readwrite.c:1308 [inline] _arm64syssendfile64+0x160/0x3b4 fs/readwrite.c:1308 _invokesyscall arch/arm64/kernel/syscall.c:37 [inline] invokesyscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0svccommon+0x130/0x23c arch/arm64/kernel/syscall.c:136 doel0svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t64synchandler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Code: aa1803e6 aa1903e7 a90023f5 94792f6a (d4210000)

References

Affected packages

Debian:11 / 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
5.10.216-1

Affected versions

5.*

5.10.46-4
5.10.46-5
5.10.70-1~bpo10+1
5.10.70-1
5.10.84-1
5.10.92-1~bpo10+1
5.10.92-1
5.10.92-2
5.10.103-1~bpo10+1
5.10.103-1
5.10.106-1
5.10.113-1
5.10.120-1~bpo10+1
5.10.120-1
5.10.127-1
5.10.127-2~bpo10+1
5.10.127-2
5.10.136-1
5.10.140-1
5.10.148-1
5.10.149-1
5.10.149-2
5.10.158-1
5.10.158-2
5.10.162-1
5.10.178-1
5.10.178-2
5.10.178-3
5.10.179-1
5.10.179-2
5.10.179-3
5.10.179-4
5.10.179-5
5.10.191-1
5.10.197-1
5.10.205-1
5.10.205-2
5.10.209-1
5.10.209-2

Ecosystem specific

{
    "urgency": "not yet assigned"
}

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
6.1.76-1

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

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
6.6.15-1

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
6.3.1-1~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

Ecosystem specific

{
    "urgency": "not yet assigned"
}