In the Linux kernel, the following vulnerability has been resolved:
gtp: fix use-after-free and null-ptr-deref in gtp_genl_dump_pdp()
The gtp_net_ops pernet operations structure for the subsystem must be
registered before registering the generic netlink family.
Syzkaller hit ‘general protection fault in gtp_genl_dump_pdp’ bug:
general protection fault, probably for non-canonical address
0xdffffc0000000002: 0000 [#1] PREEMPT SMP KASAN NOPTI
KASAN: null-ptr-deref in range [0x0000000000000010-0x0000000000000017]
CPU: 1 PID: 5826 Comm: gtp Not tainted 6.8.0-rc3-std-def-alt1 #1
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.0-alt1 04/01/2014
RIP: 0010:gtp_genl_dump_pdp+0x1be/0x800 [gtp]
Code: c6 89 c6 e8 64 e9 86 df 58 45 85 f6 0f 85 4e 04 00 00 e8 c5 ee 86
df 48 8b 54 24 18 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 <80>
3c 02 00 0f 85 de 05 00 00 48 8b 44 24 18 4c 8b 30 4c 39 f0 74
RSP: 0018:ffff888014107220 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000
R13: ffff88800fcda588 R14: 0000000000000001 R15: 0000000000000000
FS: 00007f1be4eb05c0(0000) GS:ffff88806ce80000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1be4e766cf CR3: 000000000c33e000 CR4: 0000000000750ef0
PKRU: 55555554
Call Trace:
<TASK>
? show_regs+0x90/0xa0
? die_addr+0x50/0xd0
? exc_general_protection+0x148/0x220
? asm_exc_general_protection+0x22/0x30
? gtp_genl_dump_pdp+0x1be/0x800 [gtp]
? __alloc_skb+0x1dd/0x350
? __pfx___alloc_skb+0x10/0x10
genl_dumpit+0x11d/0x230
netlink_dump+0x5b9/0xce0
? lockdep_hardirqs_on_prepare+0x253/0x430
? __pfx_netlink_dump+0x10/0x10
? kasan_save_track+0x10/0x40
? __kasan_kmalloc+0x9b/0xa0
? genl_start+0x675/0x970
__netlink_dump_start+0x6fc/0x9f0
genl_family_rcv_msg_dumpit+0x1bb/0x2d0
? __pfx_genl_family_rcv_msg_dumpit+0x10/0x10
? genl_op_from_small+0x2a/0x440
? cap_capable+0x1d0/0x240
? __pfx_genl_start+0x10/0x10
? __pfx_genl_dumpit+0x10/0x10
? __pfx_genl_done+0x10/0x10
? security_capable+0x9d/0xe0
[
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "unaffected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/gtp.c"
],
"versions": [
{
"version": "459aa660eb1d",
"lessThan": "f0ecdfa67918",
"status": "affected",
"versionType": "git"
},
{
"version": "459aa660eb1d",
"lessThan": "f8cbd1791900",
"status": "affected",
"versionType": "git"
},
{
"version": "459aa660eb1d",
"lessThan": "2e534fd15e5c",
"status": "affected",
"versionType": "git"
},
{
"version": "459aa660eb1d",
"lessThan": "a576308800be",
"status": "affected",
"versionType": "git"
},
{
"version": "459aa660eb1d",
"lessThan": "3963f16cc764",
"status": "affected",
"versionType": "git"
},
{
"version": "459aa660eb1d",
"lessThan": "ba6b8b02a331",
"status": "affected",
"versionType": "git"
},
{
"version": "459aa660eb1d",
"lessThan": "5013bd54d283",
"status": "affected",
"versionType": "git"
},
{
"version": "459aa660eb1d",
"lessThan": "136cfaca2256",
"status": "affected",
"versionType": "git"
}
]
},
{
"product": "Linux",
"vendor": "Linux",
"defaultStatus": "affected",
"repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
"programFiles": [
"drivers/net/gtp.c"
],
"versions": [
{
"version": "4.7",
"status": "affected"
},
{
"version": "0",
"lessThan": "4.7",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "4.19.308",
"lessThanOrEqual": "4.19.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.4.270",
"lessThanOrEqual": "5.4.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.10.211",
"lessThanOrEqual": "5.10.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "5.15.150",
"lessThanOrEqual": "5.15.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.1.80",
"lessThanOrEqual": "6.1.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.6.19",
"lessThanOrEqual": "6.6.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.7.7",
"lessThanOrEqual": "6.7.*",
"status": "unaffected",
"versionType": "custom"
},
{
"version": "6.8",
"lessThanOrEqual": "*",
"status": "unaffected",
"versionType": "original_commit_for_fix"
}
]
}
]
git.kernel.org/stable/c/136cfaca22567a03bbb3bf53a43d8cb5748b80ec
git.kernel.org/stable/c/2e534fd15e5c2ca15821c897352cf0e8a3e30dca
git.kernel.org/stable/c/3963f16cc7643b461271989b712329520374ad2a
git.kernel.org/stable/c/5013bd54d283eda5262c9ae3bcc966d01daf8576
git.kernel.org/stable/c/a576308800be28f2eaa099e7caad093b97d66e77
git.kernel.org/stable/c/ba6b8b02a3314e62571a540efa96560888c5f03e
git.kernel.org/stable/c/f0ecdfa679189d26aedfe24212d4e69e42c2c861
git.kernel.org/stable/c/f8cbd1791900b5d96466eede8e9439a5b9ca4de7
lists.debian.org/debian-lts-announce/2024/06/msg00017.html
lists.debian.org/debian-lts-announce/2024/06/msg00020.html