CVE-2023-53718
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-53718
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-53718.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-53718
- Downstream
- Related
- Published
- 2025-10-22T13:23:50Z
- Modified
- 2025-10-22T23:01:52.907790Z
- Summary
- ring-buffer: Do not swap cpu_buffer during resize process
- Details
-
In the Linux kernel, the following vulnerability has been resolved:
ring-buffer: Do not swap cpu_buffer during resize process
When ringbufferswap_cpu was called during resize process, the cpu buffer was swapped in the middle, resulting in incorrect state. Continuing to run in the wrong state will result in oops.
This issue can be easily reproduced using the following two scripts: /tmp # cat test1.sh //#! /bin/sh for i in
seq 0 100000do echo 2000 > /sys/kernel/debug/tracing/buffersizekb sleep 0.5 echo 5000 > /sys/kernel/debug/tracing/buffersizekb sleep 0.5 done /tmp # cat test2.sh //#! /bin/sh for i inseq 0 100000do echo irqsoff > /sys/kernel/debug/tracing/currenttracer sleep 1 echo nop > /sys/kernel/debug/tracing/currenttracer sleep 1 done /tmp # ./test1.sh & /tmp # ./test2.sh &A typical oops log is as follows, sometimes with other different oops logs.
[ 231.711293] WARNING: CPU: 0 PID: 9 at kernel/trace/ringbuffer.c:2026 rbupdatepages+0x378/0x3f8 [ 231.713375] Modules linked in: [ 231.714735] CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G W 6.5.0-rc1-00276-g20edcec23f92 #15 [ 231.716750] Hardware name: linux,dummy-virt (DT) [ 231.718152] Workqueue: events updatepageshandler [ 231.719714] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 231.721171] pc : rbupdatepages+0x378/0x3f8 [ 231.722212] lr : rbupdatepages+0x25c/0x3f8 [ 231.723248] sp : ffff800082b9bd50 [ 231.724169] x29: ffff800082b9bd50 x28: ffff8000825f7000 x27: 0000000000000000 [ 231.726102] x26: 0000000000000001 x25: fffffffffffff010 x24: 0000000000000ff0 [ 231.728122] x23: ffff0000c3a0b600 x22: ffff0000c3a0b5c0 x21: fffffffffffffe0a [ 231.730203] x20: ffff0000c3a0b600 x19: ffff0000c0102400 x18: 0000000000000000 [ 231.732329] x17: 0000000000000000 x16: 0000000000000000 x15: 0000ffffe7aa8510 [ 231.734212] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000002 [ 231.736291] x11: ffff8000826998a8 x10: ffff800082b9baf0 x9 : ffff800081137558 [ 231.738195] x8 : fffffc00030e82c8 x7 : 0000000000000000 x6 : 0000000000000001 [ 231.740192] x5 : ffff0000ffbafe00 x4 : 0000000000000000 x3 : 0000000000000000 [ 231.742118] x2 : 00000000000006aa x1 : 0000000000000001 x0 : ffff0000c0007208 [ 231.744196] Call trace: [ 231.744892] rbupdatepages+0x378/0x3f8 [ 231.745893] updatepageshandler+0x1c/0x38 [ 231.746893] processonework+0x1f0/0x468 [ 231.747852] workerthread+0x54/0x410 [ 231.748737] kthread+0x124/0x138 [ 231.749549] retfromfork+0x10/0x20 [ 231.750434] ---[ end trace 0000000000000000 ]--- [ 233.720486] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 233.721696] Mem abort info: [ 233.721935] ESR = 0x0000000096000004 [ 233.722283] EC = 0x25: DABT (current EL), IL = 32 bits [ 233.722596] SET = 0, FnV = 0 [ 233.722805] EA = 0, S1PTW = 0 [ 233.723026] FSC = 0x04: level 0 translation fault [ 233.723458] Data abort info: [ 233.723734] ISV = 0, ISS = 0x00000004, ISS2 = 0x00000000 [ 233.724176] CM = 0, WnR = 0, TnD = 0, TagAccess = 0 [ 233.724589] GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [ 233.725075] user pgtable: 4k pages, 48-bit VAs, pgdp=0000000104943000 [ 233.725592] [0000000000000000] pgd=0000000000000000, p4d=0000000000000000 [ 233.726231] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP [ 233.726720] Modules linked in: [ 233.727007] CPU: 0 PID: 9 Comm: kworker/0:1 Tainted: G W 6.5.0-rc1-00276-g20edcec23f92 #15 [ 233.727777] Hardware name: linux,dummy-virt (DT) [ 233.728225] Workqueue: events updatepageshandler [ 233.728655] pstate: 200000c5 (nzCv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 233.729054] pc : rbupdatepages+0x1a8/0x3f8 [ 233.729334] lr : rbupdatepages+0x154/0x3f8 [ 233.729592] sp : ffff800082b9bd50 [ 233.729792] x29: ffff800082b9bd50 x28: ffff8000825f7000 x27: 00000000 ---truncated---
- References
-
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- https://git.kernel.org/stable/c/02e52d7daaa3f0f48819f198092cf4871065bbf7
- https://git.kernel.org/stable/c/128c06a34cfe55212632533a706b050d54552741
- https://git.kernel.org/stable/c/49b830d75f03d5dd41146d10e4d3e2a8211c4b94
- https://git.kernel.org/stable/c/66a3b2a121386702663065d5c9e5a33c03d3f4a2
- https://git.kernel.org/stable/c/8a96c0288d0737ad77882024974c075345c72011
Affected packages
Git / git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
Affected ranges
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed66a3b2a121386702663065d5c9e5a33c03d3f4a2
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed49b830d75f03d5dd41146d10e4d3e2a8211c4b94
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed128c06a34cfe55212632533a706b050d54552741
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed02e52d7daaa3f0f48819f198092cf4871065bbf7
- Type
- GIT
- Repo
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- Events
-
Introduced1da177e4c3f41524e886b7f1b8a0c1fc7321cac2Fixed8a96c0288d0737ad77882024974c075345c72011
Affected versions
v2.*
v3.*
v4.*
v5.*
v6.*
Linux / Kernel
Package
- Name
- Kernel