net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| Linux | Linux | affected |
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Configuration 1 [-]
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No data.
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USN-8575-1 | Linux kernel vulnerabilities |
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USN-8576-1 | Linux kernel (NVIDIA Tegra) vulnerabilities |
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USN-8593-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8575-2 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8576-2 | Linux kernel (NVIDIA Tegra) vulnerabilities |
Ubuntu USN |
USN-8575-3 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8603-1 | Linux kernel (Azure) vulnerabilities |
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USN-8610-1 | Linux kernel (Azure CVM) vulnerabilities |
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USN-8618-1 | Linux kernel vulnerabilities |
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USN-8620-1 | Linux kernel vulnerabilities |
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USN-8620-2 | Linux kernel (Azure FIPS) vulnerabilities |
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USN-8620-3 | Linux kernel (Intel IoTG) vulnerabilities |
Ubuntu USN |
USN-8620-4 | Linux kernel (Intel IoTG) vulnerabilities |
Ubuntu USN |
USN-8663-1 | Linux kernel (NVIDIA) vulnerabilities |
Ubuntu USN |
USN-8664-1 | Linux kernel (NVIDIA BaseOS) vulnerabilities |
Ubuntu USN |
USN-8668-1 | Linux kernel (GCP) vulnerabilities |
Ubuntu USN |
USN-8728-1 | Linux kernel (GCP) vulnerabilities |
Ubuntu USN |
USN-8729-1 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8761-1 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-8729-2 | Linux kernel (Raspberry Pi Real-time) vulnerabilities |
Ubuntu USN |
USN-8761-2 | Linux kernel (Azure FIPS) vulnerabilities |
Ubuntu USN |
USN-8781-1 | Linux kernel (NVIDIA Tegra) vulnerabilities |
Ubuntu USN |
USN-8668-2 | Linux kernel (Raspberry Pi) vulnerabilities |
Ubuntu USN |
USN-8729-3 | Linux kernel vulnerabilities |
Ubuntu USN |
USN-8802-1 | Linux kernel (Oracle) vulnerabilities |
Ubuntu USN |
USN-8728-2 | Linux kernel (Azure) vulnerabilities |
Ubuntu USN |
USN-8729-4 | Linux kernel (Low Latency) vulnerabilities |
Ubuntu USN |
USN-8729-5 | Linux kernel (AWS FIPS) vulnerabilities |
Ubuntu USN |
USN-8728-3 | Linux kernel (Oracle) vulnerabilities |
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USN-8729-6 | Linux kernel (AWS) vulnerabilities |
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USN-8906-1 | Linux kernel (IBM) vulnerabilities |
Ubuntu USN |
USN-9066-1 | Linux kernel (HWE) vulnerabilities |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.514% probability within 30 days)
| Type | Values Removed | Values Added |
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| Weaknesses | CWE-191 |
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ssvc
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| CPEs | cpe:2.3:o:linux:linux_kernel:5.5:-:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:5.5:rc7:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc1:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc2:*:*:*:*:*:* cpe:2.3:o:linux:linux_kernel:7.1:rc3:*:*:*:*:*:* |
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| Weaknesses | CWE-193 | |
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cvssV3_1
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| Description | In the Linux kernel, the following vulnerability has been resolved: net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring When an sk_msg scatterlist ring wraps (sg.end < sg.start), tls_push_record() chains the tail portion of the ring to the head using sg_chain(). An extra entry in the sg array is reserved for this: struct sk_msg_sg { [...] /* The extra two elements: * 1) used for chaining the front and sections when the list becomes * partitioned (e.g. end < start). The crypto APIs require the * chaining; * 2) to chain tailer SG entries after the message. */ struct scatterlist data[MAX_MSG_FRAGS + 2]; The current code uses MAX_SKB_FRAGS + 1 as the ring size: sg_chain(&msg_pl->sg.data[msg_pl->sg.start], MAX_SKB_FRAGS - msg_pl->sg.start + 1, msg_pl->sg.data); This places the chain pointer at sg_chain(data[start], (MAX_SKB_FRAGS - msg_start + 1) .. = &data[start] + (MAX_SKB_FRAGS - msg_start + 1) - 1 = data[start + (MAX_SKB_FRAGS - start + 1) - 1] = data[MAX_SKB_FRAGS] instead of the true last entry. This is likely due to a "race" of the commit under Fixes landing close to commit 031097d9e079 ("bpf: sk_msg, zap ingress queue on psock down") Convert to ARRAY_SIZE and drop the data[start] / - start (as suggested by Sabrina). | |
| Title | net: tls: fix off-by-one in sg_chain entry count for wrapped sk_msg ring | |
| First Time appeared |
Linux
Linux linux Kernel |
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| CPEs | cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Linux
Linux linux Kernel |
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| References |
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