CVE-2022-49218
published 2025-02-26CVE-2022-49218: In the Linux kernel, the following vulnerability has been resolved: drm/dp: Fix OOB read when handling Post Cursor2 register The link_status array was not…
PriorityP429high7.1CVSS 3.1
AVLACLPRLUINSUCHINAH
EPSS
0.24%
15.2th percentile
In the Linux kernel, the following vulnerability has been resolved:
drm/dp: Fix OOB read when handling Post Cursor2 register
The link_status array was not large enough to read the Adjust Request
Post Cursor2 register, so remove the common helper function to avoid
an OOB read, found with a -Warray-bounds build:
drivers/gpu/drm/drm_dp_helper.c: In function 'drm_dp_get_adjust_request_post_cursor':
drivers/gpu/drm/drm_dp_helper.c:59:27: error: array subscript 10 is outside array bounds of 'const u8[6]' {aka 'const unsigned char[6]'} [-Werror=array-bounds]
59 | return link_status[r - DP_LANE0_1_STATUS];
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/drm_dp_helper.c:147:51: note: while referencing 'link_status'
147 | u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STATUS_SIZE],
| ~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Replace the only user of the helper with an open-coded fetch and decode,
similar to drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c.
Affected
11 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | linux | < linux 5.17.3-1 (bookworm) | linux 5.17.3-1 (bookworm) |
| linux | linux | — | — |
| linux | linux | >= 79465e0ffeb9e4866939ea562bc55367be91e595 < aeaed9a9fe694f8b1462fb81e2d33298c929180b | aeaed9a9fe694f8b1462fb81e2d33298c929180b |
| linux | linux | >= 79465e0ffeb9e4866939ea562bc55367be91e595 < a2151490cc6c57b368d7974ffd447a8b36ade639 | a2151490cc6c57b368d7974ffd447a8b36ade639 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 0 < 5.17.3-1 | 5.17.3-1 |
| linux | linux_kernel | >= 5.5 < 5.17.2 | 5.17.2 |
| msrc | cbl2_kernel_5.15.186.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.200.1-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl2_kernel_5.15.202.1-1_on_cbl_mariner_2.0 | — | — |
CVSS provenance
nvdv3.17.1HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H
osv7.1HIGH
vendor_debian7.1HIGH
vendor_msrc7.1HIGH
vendor_redhat7.1HIGH
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Red Hat
kernel: drm/dp: Fix OOB read when handling Post Cursor2 register
vendor_redhat·2025-02-26·CVSS 7.1
CVE-2022-49218 [HIGH] CWE-125 kernel: drm/dp: Fix OOB read when handling Post Cursor2 register
kernel: drm/dp: Fix OOB read when handling Post Cursor2 register
In the Linux kernel, the following vulnerability has been resolved:
drm/dp: Fix OOB read when handling Post Cursor2 register
The link_status array was not large enough to read the Adjust Request
Post Cursor2 register, so remove the common helper function to avoid
an OOB read, found with a -Warray-bounds build:
drivers/gpu/drm/drm_dp_helper.c: In function 'drm_dp_get_adjust_request_post_cursor':
drivers/gpu/drm/drm_dp_helper.c:59:27: error: array subscript 10 is outside array bounds of 'const u8[6]' {aka 'const unsigned char[6]'} [-Werror=array-bounds]
59 | return link_status[r - DP_LANE0_1_STATUS];
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/drm_dp_helper.c:147:51: note: while referencing 'link_status'
147 | u8 drm_
Microsoft
drm/dp: Fix OOB read when handling Post Cursor2 register
vendor_msrc·2025-02-11·CVSS 7.1
CVE-2022-49218 [HIGH] CWE-125 drm/dp: Fix OOB read when handling Post Cursor2 register
drm/dp: Fix OOB read when handling Post Cursor2 register
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the most recent and most secure versions of the open source libraries with which the distro is composed. Microsoft is committed to transparency in this work which is why we began publishing CSAF/VEX in October 2025. See this blog post for more information. If impact to additional products is identified, we will update the CVE to reflect this.
Mariner: Mariner
Linux: Linux
Customer Action Required: Yes
Debian
CVE-2022-49218: linux - In the Linux kernel, the following vulnerability has been resolved: drm/dp: Fix...
vendor_debian·2022·CVSS 7.1
CVE-2022-49218 [HIGH] CVE-2022-49218: linux - In the Linux kernel, the following vulnerability has been resolved: drm/dp: Fix...
In the Linux kernel, the following vulnerability has been resolved: drm/dp: Fix OOB read when handling Post Cursor2 register The link_status array was not large enough to read the Adjust Request Post Cursor2 register, so remove the common helper function to avoid an OOB read, found with a -Warray-bounds build: drivers/gpu/drm/drm_dp_helper.c: In function 'drm_dp_get_adjust_request_post_cursor': drivers/gpu/drm/drm_dp_helper.c:59:27: error: array subscript 10 is outside array bounds of 'const u8[6]' {aka 'const unsigned char[6]'} [-Werror=array-bounds] 59 | return link_status[r - DP_LANE0_1_STATUS]; | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/drm_dp_helper.c:147:51: note: while referencing 'link_status' 147 | u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STA
GHSA
GHSA-5876-wpj2-hw48: In the Linux kernel, the following vulnerability has been resolved:
drm/dp: Fix OOB read when handling Post Cursor2 register
The link_status array w
ghsa_unreviewed·2025-03-18
CVE-2022-49218 [HIGH] CWE-125 GHSA-5876-wpj2-hw48: In the Linux kernel, the following vulnerability has been resolved:
drm/dp: Fix OOB read when handling Post Cursor2 register
The link_status array w
In the Linux kernel, the following vulnerability has been resolved:
drm/dp: Fix OOB read when handling Post Cursor2 register
The link_status array was not large enough to read the Adjust Request
Post Cursor2 register, so remove the common helper function to avoid
an OOB read, found with a -Warray-bounds build:
drivers/gpu/drm/drm_dp_helper.c: In function 'drm_dp_get_adjust_request_post_cursor':
drivers/gpu/drm/drm_dp_helper.c:59:27: error: array subscript 10 is outside array bounds of 'const u8[6]' {aka 'const unsigned char[6]'} [-Werror=array-bounds]
59 | return link_status[r - DP_LANE0_1_STATUS];
| ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
drivers/gpu/drm/drm_dp_helper.c:147:51: note: while referencing 'link_status'
147 | u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_
OSV
CVE-2022-49218: In the Linux kernel, the following vulnerability has been resolved: drm/dp: Fix OOB read when handling Post Cursor2 register The link_status array was
osv·2025-02-26·CVSS 7.1
CVE-2022-49218 [HIGH] CVE-2022-49218: In the Linux kernel, the following vulnerability has been resolved: drm/dp: Fix OOB read when handling Post Cursor2 register The link_status array was
In the Linux kernel, the following vulnerability has been resolved: drm/dp: Fix OOB read when handling Post Cursor2 register The link_status array was not large enough to read the Adjust Request Post Cursor2 register, so remove the common helper function to avoid an OOB read, found with a -Warray-bounds build: drivers/gpu/drm/drm_dp_helper.c: In function 'drm_dp_get_adjust_request_post_cursor': drivers/gpu/drm/drm_dp_helper.c:59:27: error: array subscript 10 is outside array bounds of 'const u8[6]' {aka 'const unsigned char[6]'} [-Werror=array-bounds] 59 | return link_status[r - DP_LANE0_1_STATUS]; | ~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~ drivers/gpu/drm/drm_dp_helper.c:147:51: note: while referencing 'link_status' 147 | u8 drm_dp_get_adjust_request_post_cursor(const u8 link_status[DP_LINK_STA
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
2025-02-26
Published