CVE-2021-4439
published 2024-06-20CVE-2021-4439: In the Linux kernel, the following vulnerability has been resolved: isdn: cpai: check ctr->cnr to avoid array index out of bound The cmtp_add_connection()…
PriorityP339high7.8CVSS 3.1
AVLACLPRLUINSUCHIHAH
EPSS
0.24%
14.6th percentile
In the Linux kernel, the following vulnerability has been resolved:
isdn: cpai: check ctr->cnr to avoid array index out of bound
The cmtp_add_connection() would add a cmtp session to a controller
and run a kernel thread to process cmtp.
__module_get(THIS_MODULE);
session->task = kthread_run(cmtp_session, session, "kcmtpd_ctr_%d",
session->num);
During this process, the kernel thread would call detach_capi_ctr()
to detach a register controller. if the controller
was not attached yet, detach_capi_ctr() would
trigger an array-index-out-bounds bug.
[ 46.866069][ T6479] UBSAN: array-index-out-of-bounds in
drivers/isdn/capi/kcapi.c:483:21
[ 46.867196][ T6479] index -1 is out of range for type 'capi_ctr *[32]'
[ 46.867982][ T6479] CPU: 1 PID: 6479 Comm: kcmtpd_ctr_0 Not tainted
5.15.0-rc2+ #8
[ 46.869002][ T6479] Hardware name: QEMU Standard PC (i440FX + PIIX,
1996), BIOS 1.14.0-2 04/01/2014
[ 46.870107][ T6479] Call Trace:
[ 46.870473][ T6479] dump_stack_lvl+0x57/0x7d
[ 46.870974][ T6479] ubsan_epilogue+0x5/0x40
[ 46.871458][ T6479] __ubsan_handle_out_of_bounds.cold+0x43/0x48
[ 46.872135][ T6479] detach_capi_ctr+0x64/0xc0
[ 46.872639][ T6479] cmtp_session+0x5c8/0x5d0
[ 46.873131][ T6479] ? __init_waitqueue_head+0x60/0x60
[ 46.873712][ T6479] ? cmtp_add_msgpart+0x120/0x120
[ 46.874256][ T6479] kthread+0x147/0x170
[ 46.874709][ T6479] ? set_kthread_struct+0x40/0x40
[ 46.875248][ T6479] ret_from_fork+0x1f/0x30
[ 46.875773][ T6479]
Affected
22 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.14.16-1 (bookworm) | linux 5.14.16-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < e8b8de17e164c9f1b7777f1c6f99d05539000036 | e8b8de17e164c9f1b7777f1c6f99d05539000036 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 24219a977bfe3d658687e45615c70998acdbac5a | 24219a977bfe3d658687e45615c70998acdbac5a |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 9b6b2db77bc3121fe435f1d4b56e34de443bec75 | 9b6b2db77bc3121fe435f1d4b56e34de443bec75 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7d91adc0ccb060ce564103315189466eb822cc6a | 7d91adc0ccb060ce564103315189466eb822cc6a |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 285e9210b1fab96a11c0be3ed5cea9dd48b6ac54 | 285e9210b1fab96a11c0be3ed5cea9dd48b6ac54 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 7f221ccbee4ec662e2292d490a43ce6c314c4594 | 7f221ccbee4ec662e2292d490a43ce6c314c4594 |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < cc20226e218a2375d50dd9ac14fb4121b43375ff | cc20226e218a2375d50dd9ac14fb4121b43375ff |
| linux | linux | >= 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 < 1f3e2e97c003f80c4b087092b225c8787ff91e4d | 1f3e2e97c003f80c4b087092b225c8787ff91e4d |
| linux | linux_kernel | < 4.4.290 | 4.4.290 |
| linux | linux_kernel | — | — |
| linux | linux_kernel | >= 0 < 5.10.84-1 | 5.10.84-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 0 < 5.14.16-1 | 5.14.16-1 |
| linux | linux_kernel | >= 4.10 < 4.14.253 | 4.14.253 |
| linux | linux_kernel | >= 4.15 < 4.19.214 | 4.19.214 |
| linux | linux_kernel | >= 4.20 < 5.4.156 | 5.4.156 |
| linux | linux_kernel | >= 4.5 < 4.9.288 | 4.9.288 |
| linux | linux_kernel | >= 5.11 < 5.14.15 | 5.14.15 |
| linux | linux_kernel | >= 5.5 < 5.10.76 | 5.10.76 |
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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Red Hat
kernel: isdn: cpai: check ctr->cnr to avoid array index out of bound
vendor_redhat·2024-06-20·CVSS 7.8
CVE-2021-4439 [HIGH] CWE-787 kernel: isdn: cpai: check ctr->cnr to avoid array index out of bound
kernel: isdn: cpai: check ctr->cnr to avoid array index out of bound
In the Linux kernel, the following vulnerability has been resolved:
isdn: cpai: check ctr->cnr to avoid array index out of bound
The cmtp_add_connection() would add a cmtp session to a controller
and run a kernel thread to process cmtp.
__module_get(THIS_MODULE);
session->task = kthread_run(cmtp_session, session, "kcmtpd_ctr_%d",
session->num);
During this process, the kernel thread would call detach_capi_ctr()
to detach a register controller. if the controller
was not attached yet, detach_capi_ctr() would
trigger an array-index-out-bounds bug.
[ 46.866069][ T6479] UBSAN: array-index-out-of-bounds in
drivers/isdn/capi/kcapi.c:483:21
[ 46.867196][ T6479] index -1 is out of range for type 'capi_ctr *[32]'
[ 46.867982][ T64
Debian
CVE-2021-4439: linux - In the Linux kernel, the following vulnerability has been resolved: isdn: cpai:...
vendor_debian·2021·CVSS 7.8
CVE-2021-4439 [HIGH] CVE-2021-4439: linux - In the Linux kernel, the following vulnerability has been resolved: isdn: cpai:...
In the Linux kernel, the following vulnerability has been resolved: isdn: cpai: check ctr->cnr to avoid array index out of bound The cmtp_add_connection() would add a cmtp session to a controller and run a kernel thread to process cmtp. __module_get(THIS_MODULE); session->task = kthread_run(cmtp_session, session, "kcmtpd_ctr_%d", session->num); During this process, the kernel thread would call detach_capi_ctr() to detach a register controller. if the controller was not attached yet, detach_capi_ctr() would trigger an array-index-out-bounds bug. [ 46.866069][ T6479] UBSAN: array-index-out-of-bounds in drivers/isdn/capi/kcapi.c:483:21 [ 46.867196][ T6479] index -1 is out of range for type 'capi_ctr *[32]' [ 46.867982][ T6479] CPU: 1 PID: 6479 Comm: kcmtpd_ctr_0 Not tainted 5.15.0-rc2+ #8 [ 4
GHSA
GHSA-gcrq-r544-wxfh: In the Linux kernel, the following vulnerability has been resolved:
isdn: cpai: check ctr->cnr to avoid array index out of bound
The cmtp_add_connec
ghsa_unreviewed·2024-06-20
CVE-2021-4439 [HIGH] CWE-129 GHSA-gcrq-r544-wxfh: In the Linux kernel, the following vulnerability has been resolved:
isdn: cpai: check ctr->cnr to avoid array index out of bound
The cmtp_add_connec
In the Linux kernel, the following vulnerability has been resolved:
isdn: cpai: check ctr->cnr to avoid array index out of bound
The cmtp_add_connection() would add a cmtp session to a controller
and run a kernel thread to process cmtp.
__module_get(THIS_MODULE);
session->task = kthread_run(cmtp_session, session, "kcmtpd_ctr_%d",
session->num);
During this process, the kernel thread would call detach_capi_ctr()
to detach a register controller. if the controller
was not attached yet, detach_capi_ctr() would
trigger an array-index-out-bounds bug.
[ 46.866069][ T6479] UBSAN: array-index-out-of-bounds in
drivers/isdn/capi/kcapi.c:483:21
[ 46.867196][ T6479] index -1 is out of range for type 'capi_ctr *[32]'
[ 46.867982][ T6479] CPU: 1 PID: 6479 Comm: kcmtpd_ctr_0 Not tainted
5.15.0-rc2+ #
OSV
CVE-2021-4439: In the Linux kernel, the following vulnerability has been resolved: isdn: cpai: check ctr->cnr to avoid array index out of bound The cmtp_add_connecti
osv·2024-06-20·CVSS 7.8
CVE-2021-4439 [HIGH] CVE-2021-4439: In the Linux kernel, the following vulnerability has been resolved: isdn: cpai: check ctr->cnr to avoid array index out of bound The cmtp_add_connecti
In the Linux kernel, the following vulnerability has been resolved: isdn: cpai: check ctr->cnr to avoid array index out of bound The cmtp_add_connection() would add a cmtp session to a controller and run a kernel thread to process cmtp. __module_get(THIS_MODULE); session->task = kthread_run(cmtp_session, session, "kcmtpd_ctr_%d", session->num); During this process, the kernel thread would call detach_capi_ctr() to detach a register controller. if the controller was not attached yet, detach_capi_ctr() would trigger an array-index-out-bounds bug. [ 46.866069][ T6479] UBSAN: array-index-out-of-bounds in drivers/isdn/capi/kcapi.c:483:21 [ 46.867196][ T6479] index -1 is out of range for type 'capi_ctr *[32]' [ 46.867982][ T6479] CPU: 1 PID: 6479 Comm: kcmtpd_ctr_0 Not tainted 5.15.0-rc2+ #8 [ 4
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://git.kernel.org/stable/c/1f3e2e97c003f80c4b087092b225c8787ff91e4dhttps://git.kernel.org/stable/c/24219a977bfe3d658687e45615c70998acdbac5ahttps://git.kernel.org/stable/c/285e9210b1fab96a11c0be3ed5cea9dd48b6ac54https://git.kernel.org/stable/c/7d91adc0ccb060ce564103315189466eb822cc6ahttps://git.kernel.org/stable/c/7f221ccbee4ec662e2292d490a43ce6c314c4594https://git.kernel.org/stable/c/9b6b2db77bc3121fe435f1d4b56e34de443bec75https://git.kernel.org/stable/c/cc20226e218a2375d50dd9ac14fb4121b43375ffhttps://git.kernel.org/stable/c/e8b8de17e164c9f1b7777f1c6f99d05539000036https://git.kernel.org/stable/c/1f3e2e97c003f80c4b087092b225c8787ff91e4dhttps://git.kernel.org/stable/c/24219a977bfe3d658687e45615c70998acdbac5ahttps://git.kernel.org/stable/c/285e9210b1fab96a11c0be3ed5cea9dd48b6ac54https://git.kernel.org/stable/c/7d91adc0ccb060ce564103315189466eb822cc6ahttps://git.kernel.org/stable/c/7f221ccbee4ec662e2292d490a43ce6c314c4594https://git.kernel.org/stable/c/9b6b2db77bc3121fe435f1d4b56e34de443bec75https://git.kernel.org/stable/c/cc20226e218a2375d50dd9ac14fb4121b43375ffhttps://git.kernel.org/stable/c/e8b8de17e164c9f1b7777f1c6f99d05539000036
2024-06-20
Published