CVE-2023-53500
published 2025-10-01CVE-2023-53500: In the Linux kernel, the following vulnerability has been resolved: xfrm: fix slab-use-after-free in decode_session6 When the xfrm device is set to the qdisc…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.15%
4.8th percentile
In the Linux kernel, the following vulnerability has been resolved:
xfrm: fix slab-use-after-free in decode_session6
When the xfrm device is set to the qdisc of the sfb type, the cb field
of the sent skb may be modified during enqueuing. Then,
slab-use-after-free may occur when the xfrm device sends IPv6 packets.
The stack information is as follows:
BUG: KASAN: slab-use-after-free in decode_session6+0x103f/0x1890
Read of size 1 at addr ffff8881111458ef by task swapper/3/0
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.4.0-next-20230707 #409
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014
Call Trace:
dump_stack_lvl+0xd9/0x150
print_address_description.constprop.0+0x2c/0x3c0
kasan_report+0x11d/0x130
decode_session6+0x103f/0x1890
__xfrm_decode_session+0x54/0xb0
xfrmi_xmit+0x173/0x1ca0
dev_hard_start_xmit+0x187/0x700
sch_direct_xmit+0x1a3/0xc30
__qdisc_run+0x510/0x17a0
__dev_queue_xmit+0x2215/0x3b10
neigh_connected_output+0x3c2/0x550
ip6_finish_output2+0x55a/0x1550
ip6_finish_output+0x6b9/0x1270
ip6_output+0x1f1/0x540
ndisc_send_skb+0xa63/0x1890
ndisc_send_rs+0x132/0x6f0
addrconf_rs_timer+0x3f1/0x870
call_timer_fn+0x1a0/0x580
expire_timers+0x29b/0x4b0
run_timer_softirq+0x326/0x910
__do_softirq+0x1d4/0x905
irq_exit_rcu+0xb7/0x120
sysvec_apic_timer_interrupt+0x97/0xc0
asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:intel_idle_hlt+0x23/0x30
Code: 1f 84 00 00 00 00 00 f3 0f 1e fa 41 54 41 89 d4 0f 1f 44 00 00 66 90 0f 1f 44 00 00 0f 00 2d c4 9f ab 00 0f 1f 44 00 00 fb f4 44 89 e0 41 5c c3 66 0f 1f 44 00 00 f3 0f 1e fa 41 54 41 89 d4
RSP: 0018:ffffc90000197d78 EFLAGS: 00000246
RAX: 00000000000a83c3 RBX: ffffe8ffffd09c50 RCX: ffffffff8a22d8e5
RDX: 0000000000000001 RSI: ffffffff8d3f8080 RDI: ffffe8ffffd09c50
RBP: ffffffff8d3f8080 R08: 0000000000000001 R09: ffffed1026ba6d9d
R10: ffff888135d36ceb R11: 0000000000000001 R12: 0000000000000001
R13: ffffffff8d3f8100 R14: 0000000000000001 R15: 0000000000000000
cpuidle_enter_state+0xd3/0x6f0
Affected
21 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 6.1.52-1 (bookworm) | linux 6.1.52-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= f855691975bb06373a98711e4cfe2c224244b536 < da4cbaa75ed088b6d70db77b9103a27e2359e243 | da4cbaa75ed088b6d70db77b9103a27e2359e243 |
| linux | linux | >= f855691975bb06373a98711e4cfe2c224244b536 < db0e50741f0387f388e9ec824ea7ae8456554d5b | db0e50741f0387f388e9ec824ea7ae8456554d5b |
| linux | linux | >= f855691975bb06373a98711e4cfe2c224244b536 < bafa236380816b41b2c4c6970d9067fefa4a6c9e | bafa236380816b41b2c4c6970d9067fefa4a6c9e |
| linux | linux | >= f855691975bb06373a98711e4cfe2c224244b536 < 44b3d40967009304617a7a6486490c1d6c12f899 | 44b3d40967009304617a7a6486490c1d6c12f899 |
| linux | linux | >= f855691975bb06373a98711e4cfe2c224244b536 < 0d27567fde5be5f0edc2db5c110142b7915b8fa8 | 0d27567fde5be5f0edc2db5c110142b7915b8fa8 |
| linux | linux | >= f855691975bb06373a98711e4cfe2c224244b536 < 86f15300a22656db3fa8c8967defbcd24fac4d37 | 86f15300a22656db3fa8c8967defbcd24fac4d37 |
| linux | linux | >= f855691975bb06373a98711e4cfe2c224244b536 < 53223f2ed1ef5c90dad814daaaefea4e68a933c8 | 53223f2ed1ef5c90dad814daaaefea4e68a933c8 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.197-1 | 5.10.197-1 |
| linux | linux_kernel | >= 0 < 6.1.52-1 | 6.1.52-1 |
| linux | linux_kernel | >= 0 < 6.4.13-1 | 6.4.13-1 |
| linux | linux_kernel | >= 0 < 6.4.13-1 | 6.4.13-1 |
| linux | linux_kernel | >= 3.19.1 < 4.19.293 | 4.19.293 |
| linux | linux_kernel | >= 4.20 < 5.4.255 | 5.4.255 |
| linux | linux_kernel | >= 5.11 < 5.15.128 | 5.15.128 |
| linux | linux_kernel | >= 5.16 < 6.1.47 | 6.1.47 |
| linux | linux_kernel | >= 5.5 < 5.10.192 | 5.10.192 |
| linux | linux_kernel | >= 6.2 < 6.4.12 | 6.4.12 |
CVSS provenance
nvdv3.17.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
osv7.8HIGH
vendor_debian7.8HIGH
vendor_redhat7.8HIGH
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OSV
CVE-2023-53500: In the Linux kernel, the following vulnerability has been resolved: xfrm: fix slab-use-after-free in decode_session6 When the xfrm device is set to th
osv·2025-10-01·CVSS 7.8
CVE-2023-53500 [HIGH] CVE-2023-53500: In the Linux kernel, the following vulnerability has been resolved: xfrm: fix slab-use-after-free in decode_session6 When the xfrm device is set to th
In the Linux kernel, the following vulnerability has been resolved: xfrm: fix slab-use-after-free in decode_session6 When the xfrm device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when the xfrm device sends IPv6 packets. The stack information is as follows: BUG: KASAN: slab-use-after-free in decode_session6+0x103f/0x1890 Read of size 1 at addr ffff8881111458ef by task swapper/3/0 CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.4.0-next-20230707 #409 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014 Call Trace: dump_stack_lvl+0xd9/0x150 print_address_description.constprop.0+0x2c/0x3c0 kasan_report+0x11d/0x130 decode_session6+0x103f/0x1890 __xfrm_decode_session+0x54/0x
GHSA
GHSA-hx6j-r6x5-73w3: In the Linux kernel, the following vulnerability has been resolved:
xfrm: fix slab-use-after-free in decode_session6
When the xfrm device is set to
ghsa_unreviewed·2025-10-01
CVE-2023-53500 [HIGH] CWE-416 GHSA-hx6j-r6x5-73w3: In the Linux kernel, the following vulnerability has been resolved:
xfrm: fix slab-use-after-free in decode_session6
When the xfrm device is set to
In the Linux kernel, the following vulnerability has been resolved:
xfrm: fix slab-use-after-free in decode_session6
When the xfrm device is set to the qdisc of the sfb type, the cb field
of the sent skb may be modified during enqueuing. Then,
slab-use-after-free may occur when the xfrm device sends IPv6 packets.
The stack information is as follows:
BUG: KASAN: slab-use-after-free in decode_session6+0x103f/0x1890
Read of size 1 at addr ffff8881111458ef by task swapper/3/0
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.4.0-next-20230707 #409
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014
Call Trace:
dump_stack_lvl+0xd9/0x150
print_address_description.constprop.0+0x2c/0x3c0
kasan_report+0x11d/0x130
decode_session6+0x103f/0x1890
__xfrm_decode_session+0x5
Red Hat
kernel: xfrm: fix slab-use-after-free in decode_session6
vendor_redhat·2025-10-01·CVSS 7.8
CVE-2023-53500 [HIGH] CWE-664 kernel: xfrm: fix slab-use-after-free in decode_session6
kernel: xfrm: fix slab-use-after-free in decode_session6
In the Linux kernel, the following vulnerability has been resolved:
xfrm: fix slab-use-after-free in decode_session6
When the xfrm device is set to the qdisc of the sfb type, the cb field
of the sent skb may be modified during enqueuing. Then,
slab-use-after-free may occur when the xfrm device sends IPv6 packets.
The stack information is as follows:
BUG: KASAN: slab-use-after-free in decode_session6+0x103f/0x1890
Read of size 1 at addr ffff8881111458ef by task swapper/3/0
CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.4.0-next-20230707 #409
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014
Call Trace:
dump_stack_lvl+0xd9/0x150
print_address_description.constprop.0+0x2c/0x3c0
kasan_report+0x11d/0x130
Debian
CVE-2023-53500: linux - In the Linux kernel, the following vulnerability has been resolved: xfrm: fix s...
vendor_debian·2023·CVSS 7.8
CVE-2023-53500 [HIGH] CVE-2023-53500: linux - In the Linux kernel, the following vulnerability has been resolved: xfrm: fix s...
In the Linux kernel, the following vulnerability has been resolved: xfrm: fix slab-use-after-free in decode_session6 When the xfrm device is set to the qdisc of the sfb type, the cb field of the sent skb may be modified during enqueuing. Then, slab-use-after-free may occur when the xfrm device sends IPv6 packets. The stack information is as follows: BUG: KASAN: slab-use-after-free in decode_session6+0x103f/0x1890 Read of size 1 at addr ffff8881111458ef by task swapper/3/0 CPU: 3 PID: 0 Comm: swapper/3 Not tainted 6.4.0-next-20230707 #409 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.14.0-1.fc33 04/01/2014 Call Trace: dump_stack_lvl+0xd9/0x150 print_address_description.constprop.0+0x2c/0x3c0 kasan_report+0x11d/0x130 decode_session6+0x103f/0x1890 __xfrm_decode_session+0x54/0x
No detection rules found.
No public exploits indexed.
https://git.kernel.org/stable/c/0d27567fde5be5f0edc2db5c110142b7915b8fa8https://git.kernel.org/stable/c/44b3d40967009304617a7a6486490c1d6c12f899https://git.kernel.org/stable/c/53223f2ed1ef5c90dad814daaaefea4e68a933c8https://git.kernel.org/stable/c/86f15300a22656db3fa8c8967defbcd24fac4d37https://git.kernel.org/stable/c/bafa236380816b41b2c4c6970d9067fefa4a6c9ehttps://git.kernel.org/stable/c/da4cbaa75ed088b6d70db77b9103a27e2359e243https://git.kernel.org/stable/c/db0e50741f0387f388e9ec824ea7ae8456554d5b
2025-10-01
Published