do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a result
do_tls_getsockopt in net/tls/tls_main.c in the Linux kernel through 6.2.6 lacks a lock_sock call, leading to a race condition (with a resultant use-after-free or NULL pointer dereference).
- BDU:2023-02097
- ALSA-2023:3708
- ALSA-2023:3723
- ALSA-2023:3819
- ALSA-2023:3847
- RHSA-2023:3708
- RHSA-2023:3723
- RHSA-2023:3819
- RHSA-2023:3847
- RHSA-2023:4789
- RHSA-2023:4801
- RHSA-2023:4814
- RLSA-2023:3819
- RLSA-2023:3847
- SUSE-SU-2023:1800-1
- SUSE-SU-2023:1802-1
- SUSE-SU-2023:1811-1
- SUSE-SU-2023:1892-1
- SUSE-SU-2023:1897-1
- SUSE-SU-2023:1992-1
- Published
- Mar 15, 2023
- Updated
- Jun 17, 2026
- EPSS
- 0.3% · 18th percentile
- CWE
- CWE-476
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Report tools
Action score
28
Monitor
Low priority for now.
- CVSS
- 28 / 40 · 7.0 / 10
- CISA KEV
- 0 / 30 · Not listed
- EPSS
- 0 / 30 · 0.3%
CISA SSVC decision
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
Vulnrichment: CISA's decision-tree inputs.
Noroxi analysis
No Noroxi analysis for this record yet
We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.
We use this product, ask for helpAffected systems
| Vendor | Product | CPE |
|---|---|---|
| linux | linux kernel | cpe:2.3:o:linux:linux_kernel |
| netapp | h300s | cpe:2.3:h:netapp:h300s |
| netapp | h410c | cpe:2.3:h:netapp:h410c |
| netapp | h410s | cpe:2.3:h:netapp:h410s |
| netapp | h500s | cpe:2.3:h:netapp:h500s |
| netapp | h700s | cpe:2.3:h:netapp:h700s |
| debian | debian linux | cpe:2.3:o:debian:debian_linux |
Affected versions
NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.
- debian debian linux10.0
- linux linux kernel5.5 and later · before 5.10.177
- linux linux kernel5.11 and later · before 5.15.105
- linux linux kernel5.16 and later · before 6.1.20
- linux linux kernel6.2 and later · before 6.2.7
- linux linux kernel4.13 and later · up to 5.4.240 inclusive
- netapp h300sall versions
- netapp h410call versions
- netapp h410sall versions
- netapp h500sall versions
- netapp h700sall versions
Package-level exposure
OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.
| Ecosystem | Package | Affected range | Fix |
|---|---|---|---|
| AlmaLinux:8 | bpftool | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-abi-stablelists | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-core | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-cross-headers | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-debug | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-debug-core | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-debug-devel | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-debug-modules | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-debug-modules-extra | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-devel | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-doc | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-modules | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-modules-extra | before 4.18.0-477.15.1.el8_8 | 4.18.0-477.15.1.el8_8 |
| AlmaLinux:8 | kernel-rt | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
| AlmaLinux:8 | kernel-rt-core | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
| AlmaLinux:8 | kernel-rt-debug | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
| AlmaLinux:8 | kernel-rt-debug-core | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
| AlmaLinux:8 | kernel-rt-debug-devel | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
| AlmaLinux:8 | kernel-rt-debug-kvm | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
| AlmaLinux:8 | kernel-rt-debug-modules | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
| AlmaLinux:8 | kernel-rt-debug-modules-extra | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
| AlmaLinux:8 | kernel-rt-devel | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
| AlmaLinux:8 | kernel-rt-kvm | before 4.18.0-477.15.1.rt7.278.el8_8 | 4.18.0-477.15.1.rt7.278.el8_8 |
+96
Same product
linux: all recordsOther highest-scoring records for the same primary product.
- CVE-2022-0847A flaw was found in the way the "flags" member of the new pipe buffer structure was lacking proper initialization in copy_page_to_iter_pipe KEV89Now
- CVE-2021-22555Heap Out-Of-Bounds Write in Netfilter IP6T_SO_SET_REPLACEKEV85Now
- CVE-2016-5195Race condition in mm/gup.c in the Linux kernel 2.x through 4.x before 4.8.3 allows local users to gain privileges by leveraging incorrect haKEV83Now
- CVE-2019-13272In the Linux kernel before 5.1.17, ptrace_link in kernel/ptrace.c mishandles the recording of the credentials of a process that wants to creKEV77This week
- CVE-2013-6282The (1) get_user and (2) put_user API functions in the Linux kernel before 3.5.5 on the v6k and v7 ARM platforms do not validate certain addKEV77This week
- CVE-2013-2094The perf_swevent_init function in kernel/events/core.c in the Linux kernel before 3.8.9 uses an incorrect integer data type, which allows loKEV77This week
Remediation
Which version to upgrade to
Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.
| Product / package | Fixed version | Source |
|---|---|---|
| almalinux:kernel-rt | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-core | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-core | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-devel | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-kvm | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-modules | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-modules-core | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-debug-modules-extra | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-devel | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-kvm | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| almalinux:kernel-rt-modules | 5.14.0-284.18.1.rt14.303.el9_2 · AlmaLinux:9 | Package registry (OSV) |
| debian:linux | 6.1.20-1 · Debian:12 | Package registry (OSV) |
| opensuse:kernel-azure | 5.14.21-150400.14.43.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:kernel-source-azure | 5.14.21-150400.14.43.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| opensuse:kernel-syms-azure | 5.14.21-150400.14.43.1 · openSUSE:Leap 15.4 | Package registry (OSV) |
| red hat:kernel-rt | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-core | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-core | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-debuginfo | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-devel | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-kvm | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-modules | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-modules-core | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debug-modules-extra | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debuginfo | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| red hat:kernel-rt-debuginfo-common-x86_64 | 0:5.14.0-284.18.1.rt14.303.el9_2 · Red Hat:enterprise_linux:9::nfv | Package registry (OSV) |
| rocky linux:kernel | 0:4.18.0-477.15.1.el8_8 · Rocky Linux:8 | Package registry (OSV) |
| rocky linux:kernel-rt | 0:4.18.0-477.15.1.rt7.278.el8_8 · Rocky Linux:8 | Package registry (OSV) |
+17
Exploit status
No known public exploit
No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.
Research context
For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.
Timeline
From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.
No dated events beyond publication.
FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).
Patch and commit links
Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.
No commit or PR link among the references.
Credits
All researchersFinders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.
No credits in the CNA record.
Variant candidates
Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.
No nightly-computed relations.
Chain candidates
An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.
—
Bug bounty scope
No known public program.
Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).
National notice (Türkiye Cybersecurity Directorate / USOM)
Official security notices citing this record; remediation advice is on the agency's page.
- TR-23-0391 · Jul 10, 2023(Linux Kernel Güncellemesi)
Technical details
Attack conditions
- Someone with local access to the system can trigger it.
- A low-privileged account is enough.
- No user action is required.
- Special conditions such as timing or configuration are required.
If successful
- Confidentiality
- high · data can be read
- Integrity
- high · data or configuration can be modified
- Availability
- high · the service can be disrupted
- Attack vector
- Local
- Attack complexity
- High
- Privileges required
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
Weakness class (CWE)
CWE-476 · NULL Pointer DereferenceCVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
nvd-primary
Attack context
MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.
MITRE has no CAPEC/ATT&CK mapping for this CWE.
Change log
- Fix✗ → ✓
For records you follow, these changes also arrive as notifications. →
References
- git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit?id=49c47cc21b5b7a3d8deb18fc57b0aa2ab1286962
- lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- security.netapp.com/advisory/ntap-20230427-0006/
Vendor advisories and official records. Exploit/PoC links are deliberately left out.